diff --git a/core/core.api.php b/core/core.api.php
index 047b440..67f592f 100644
--- a/core/core.api.php
+++ b/core/core.api.php
@@ -79,9 +79,9 @@
  * Web services make it possible for applications and web sites to read and
  * update information from other web sites. There are several standard
  * techniques for providing web services, including:
- * - SOAP: http://en.wikipedia.org/wiki/SOAP SOAP
- * - XML-RPC: http://en.wikipedia.org/wiki/XML-RPC
- * - REST: http://en.wikipedia.org/wiki/Representational_state_transfer
+ * - SOAP: http://wikipedia.org/wiki/SOAP
+ * - XML-RPC: http://wikipedia.org/wiki/XML-RPC
+ * - REST: http://wikipedia.org/wiki/Representational_state_transfer
  * Drupal sites can both provide web services and integrate third-party web
  * services.
  *
@@ -254,7 +254,7 @@
  * - Exporting and importing configuration.
  *
  * The file storage format for configuration information in Drupal is
- * @link http://en.wikipedia.org/wiki/YAML YAML files. @endlink Configuration is
+ * @link http://wikipedia.org/wiki/YAML YAML files. @endlink Configuration is
  * divided into files, each containing one configuration object. The file name
  * for a configuration object is equal to the unique name of the configuration,
  * with a '.yml' extension. The default configuration files for each module are
@@ -1120,7 +1120,7 @@
  *
  * A runtime assertion is a statement that is expected to always be true at
  * the point in the code it appears at. They are tested using PHP's internal
- * @link http://www.php.net/assert assert() @endlink statement. If an
+ * @link http://php.net/assert assert() @endlink statement. If an
  * assertion is ever FALSE it indicates an error in the code or in module or
  * theme configuration files. User-provided configuration files should be
  * verified with standard control structures at all times, not just checked in
diff --git a/core/includes/file.inc b/core/includes/file.inc
index b9c217b..3e5eb8c 100644
--- a/core/includes/file.inc
+++ b/core/includes/file.inc
@@ -630,7 +630,8 @@ function file_munge_filename($filename, $extensions, $alerts = TRUE) {
 
   // Allow potentially insecure uploads for very savvy users and admin
   if (!\Drupal::config('system.file')->get('allow_insecure_uploads')) {
-    // Remove any null bytes. See http://php.net/manual/en/security.filesystem.nullbytes.php
+    // Remove any null bytes. See
+    // http://php.net/manual/security.filesystem.nullbytes.php
     $filename = str_replace(chr(0), '', $filename);
 
     $whitelist = array_unique(explode(' ', strtolower(trim($extensions))));
diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 5da67fb..0a9d7b7 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -401,7 +401,7 @@ function theme_render_and_autoescape($arg) {
       $return = (string) $arg;
     }
     // You can't throw exceptions in the magic PHP __toString methods, see
-    // http://php.net/manual/en/language.oop5.magic.php#object.tostring so
+    // http://php.net/manual/language.oop5.magic.php#object.tostring so
     // we also support a toString method.
     elseif (method_exists($arg, 'toString')) {
       $return = $arg->toString();
diff --git a/core/includes/unicode.inc b/core/includes/unicode.inc
index 216d112..ba88a94 100644
--- a/core/includes/unicode.inc
+++ b/core/includes/unicode.inc
@@ -29,7 +29,7 @@ function unicode_requirements() {
     'value' => $libraries[$library],
     'severity' => $severities[$library],
   );
-  $t_args = array(':url' => 'http://www.php.net/mbstring');
+  $t_args = array(':url' => 'http://php.net/mbstring');
   switch ($failed_check) {
     case 'mb_strlen':
       $requirements['unicode']['description'] = t('Operations on Unicode strings are emulated on a best-effort basis. Install the <a href=":url">PHP mbstring extension</a> for improved Unicode support.', $t_args);
diff --git a/core/lib/Drupal/Component/Datetime/DateTimePlus.php b/core/lib/Drupal/Component/Datetime/DateTimePlus.php
index 4540b3b..530a63e 100644
--- a/core/lib/Drupal/Component/Datetime/DateTimePlus.php
+++ b/core/lib/Drupal/Component/Datetime/DateTimePlus.php
@@ -177,7 +177,7 @@ public static function createFromTimestamp($timestamp, $timezone = NULL, $settin
    *   to use things like negative years, which php's parser fails on, or
    *   any other specialized input with a known format. If provided the
    *   date will be created using the createFromFormat() method.
-   *   @see http://us3.php.net/manual/en/datetime.createfromformat.php
+   *   @see http://php.net/manual/datetime.createfromformat.php
    * @param mixed $time
    *   @see __construct()
    * @param mixed $timezone
@@ -389,7 +389,7 @@ protected function prepareFormat($format) {
    * PHP creates a valid date from invalid data with only a warning,
    * 2011-02-30 becomes 2011-03-03, for instance, but we don't want that.
    *
-   * @see http://us3.php.net/manual/en/time.getlasterrors.php
+   * @see http://php.net/manual/time.getlasterrors.php
    */
   public function checkErrors() {
     $errors = \DateTime::getLastErrors();
diff --git a/core/lib/Drupal/Component/Utility/Bytes.php b/core/lib/Drupal/Component/Utility/Bytes.php
index 0bcac31..4d331ea 100644
--- a/core/lib/Drupal/Component/Utility/Bytes.php
+++ b/core/lib/Drupal/Component/Utility/Bytes.php
@@ -15,7 +15,7 @@ class Bytes {
   /**
    * The number of bytes in a kilobyte.
    *
-   * @see http://en.wikipedia.org/wiki/Kilobyte
+   * @see http://wikipedia.org/wiki/Kilobyte
    */
   const KILOBYTE = 1024;
 
diff --git a/core/lib/Drupal/Component/Utility/Html.php b/core/lib/Drupal/Component/Utility/Html.php
index 0c811f2..d13c134 100644
--- a/core/lib/Drupal/Component/Utility/Html.php
+++ b/core/lib/Drupal/Component/Utility/Html.php
@@ -334,7 +334,7 @@ public static function escapeCdataElement(\DOMNode $node, $comment_start = '//',
         // Prevent invalid cdata escaping as this would throw a DOM error.
         // This is the same behavior as found in libxml2.
         // Related W3C standard: http://www.w3.org/TR/REC-xml/#dt-cdsection
-        // Fix explanation: http://en.wikipedia.org/wiki/CDATA#Nesting
+        // Fix explanation: http://wikipedia.org/wiki/CDATA#Nesting
         $data = str_replace(']]>', ']]]]><![CDATA[>', $child_node->data);
 
         $fragment = $node->ownerDocument->createDocumentFragment();
diff --git a/core/lib/Drupal/Component/Utility/OpCodeCache.php b/core/lib/Drupal/Component/Utility/OpCodeCache.php
index 90b28e7..999d68bb 100644
--- a/core/lib/Drupal/Component/Utility/OpCodeCache.php
+++ b/core/lib/Drupal/Component/Utility/OpCodeCache.php
@@ -37,7 +37,7 @@ public static function invalidate($pathname) {
     if (extension_loaded('apc') && function_exists('apc_delete_file')) {
       // apc_delete_file() throws a PHP warning in case the specified file was
       // not compiled yet.
-      // @see http://php.net/manual/en/function.apc-delete-file.php
+      // @see http://php.net/manual/function.apc-delete-file.php
       @apc_delete_file($pathname);
     }
   }
diff --git a/core/lib/Drupal/Core/Config/ConfigBase.php b/core/lib/Drupal/Core/Config/ConfigBase.php
index 8263e9a..77460f9 100644
--- a/core/lib/Drupal/Core/Config/ConfigBase.php
+++ b/core/lib/Drupal/Core/Config/ConfigBase.php
@@ -55,7 +55,7 @@
    * incompatible with this limitation are created, we enforce a maximum name
    * length of 250 characters (leaving 5 characters for the file extension).
    *
-   * @see http://en.wikipedia.org/wiki/Comparison_of_file_systems
+   * @see http://wikipedia.org/wiki/Comparison_of_file_systems
    *
    * Configuration objects not stored on the filesystem should still be
    * restricted in name length so name can be used as a cache key.
diff --git a/core/lib/Drupal/Core/Database/Log.php b/core/lib/Drupal/Core/Database/Log.php
index e45a3be..ffcf03e 100644
--- a/core/lib/Drupal/Core/Database/Log.php
+++ b/core/lib/Drupal/Core/Database/Log.php
@@ -136,7 +136,9 @@ public function log(StatementInterface $statement, $args, $time) {
    * climbing logic very simple, and handles the variable stack depth caused by
    * the query builders.
    *
-   * @link http://www.php.net/debug_backtrace
+   * See the @link http://php.net/debug_backtrace debug_backtrace() @endlink
+   * function.
+   *
    * @return
    *   This method returns a stack trace entry similar to that generated by
    *   debug_backtrace(). However, it flattens the trace entry and the trace
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampFormatter.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampFormatter.php
index e703084..c117a09 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampFormatter.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldFormatter/TimestampFormatter.php
@@ -126,7 +126,7 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
     $elements['custom_date_format'] = array(
       '#type' => 'textfield',
       '#title' => $this->t('Custom date format'),
-      '#description' => $this->t('See <a href=":url" target="_blank">the documentation for PHP date formats</a>.', [':url' => 'http://php.net/manual/function.date.php']),
+      '#description' => $this->t('See <a href="http://php.net/manual/function.date.php" target="_blank">the documentation for PHP date formats</a>.'),
       '#default_value' => $this->getSetting('custom_date_format') ?: '',
     );
 
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php
index e3867d4..b7f32ee 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/DecimalItem.php
@@ -152,7 +152,7 @@ public static function generateSampleValue(FieldDefinitionInterface $field_defin
     $scale = rand($decimal_digits, $scale);
 
     // @see "Example #1 Calculate a random floating-point number" in
-    // http://php.net/manual/en/function.mt-getrandmax.php
+    // http://php.net/manual/function.mt-getrandmax.php
     $random_decimal = $min + mt_rand() / mt_getrandmax() * ($max - $min);
     $values['value'] = self::truncateDecimal($random_decimal, $scale);
     return $values;
diff --git a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/FloatItem.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/FloatItem.php
index 34eebe9..9bc552d 100644
--- a/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/FloatItem.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/FloatItem.php
@@ -72,7 +72,7 @@ public static function generateSampleValue(FieldDefinitionInterface $field_defin
     $max = is_numeric($settings['max']) ?: pow(10, ($precision - $scale)) - 1;
     $min = is_numeric($settings['min']) ?: -pow(10, ($precision - $scale)) + 1;
     // @see "Example #1 Calculate a random floating-point number" in
-    // http://php.net/manual/en/function.mt-getrandmax.php
+    // http://php.net/manual/function.mt-getrandmax.php
     $random_decimal = $min + mt_rand() / mt_getrandmax() * ($max - $min);
     $values['value'] = self::truncateDecimal($random_decimal, $scale);
     return $values;
diff --git a/core/lib/Drupal/Core/Mail/Plugin/Mail/PhpMail.php b/core/lib/Drupal/Core/Mail/Plugin/Mail/PhpMail.php
index 9dcb582..c939565 100644
--- a/core/lib/Drupal/Core/Mail/Plugin/Mail/PhpMail.php
+++ b/core/lib/Drupal/Core/Mail/Plugin/Mail/PhpMail.php
@@ -53,7 +53,7 @@ public function format(array $message) {
    * @return bool
    *   TRUE if the mail was successfully accepted, otherwise FALSE.
    *
-   * @see http://php.net/manual/en/function.mail.php
+   * @see http://php.net/manual/function.mail.php
    * @see \Drupal\Core\Mail\MailManagerInterface::mail()
    */
   public function mail(array $message) {
diff --git a/core/lib/Drupal/Core/Render/Element/HtmlTag.php b/core/lib/Drupal/Core/Render/Element/HtmlTag.php
index f2bcacf..158889c 100644
--- a/core/lib/Drupal/Core/Render/Element/HtmlTag.php
+++ b/core/lib/Drupal/Core/Render/Element/HtmlTag.php
@@ -147,7 +147,7 @@ public static function preRenderConditionalComments($element) {
     // conditional comment markup. The conditional comment expression is
     // evaluated by Internet Explorer only. To control the rendering by other
     // browsers, use either the "downlevel-hidden" or "downlevel-revealed"
-    // technique. See http://en.wikipedia.org/wiki/Conditional_comment
+    // technique. See http://wikipedia.org/wiki/Conditional_comment
     // for details.
 
     // Ensure what we are dealing with is safe.
diff --git a/core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php b/core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php
index 4013d0f..ad4636c 100644
--- a/core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php
+++ b/core/lib/Drupal/Core/StreamWrapper/LocalReadOnlyStream.php
@@ -104,7 +104,7 @@ public function stream_lock($operation) {
    * @return bool
    *   FALSE as data will not be written.
    *
-   * @see http://php.net/manual/en/streamwrapper.stream-write.php
+   * @see http://php.net/manual/streamwrapper.stream-write.php
    */
   public function stream_write($data) {
     trigger_error('stream_write() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -158,7 +158,7 @@ public function stream_truncate($new_size) {
    *   TRUE so that file_delete() will remove db reference to file. File is not
    *   actually deleted.
    *
-   * @see http://php.net/manual/en/streamwrapper.unlink.php
+   * @see http://php.net/manual/streamwrapper.unlink.php
    */
   public function unlink($uri) {
     trigger_error('unlink() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -178,7 +178,7 @@ public function unlink($uri) {
    * @return bool
    *   FALSE as file will never be renamed.
    *
-   * @see http://php.net/manual/en/streamwrapper.rename.php
+   * @see http://php.net/manual/streamwrapper.rename.php
    */
   public function rename($from_uri, $to_uri) {
     trigger_error('rename() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -200,7 +200,7 @@ public function rename($from_uri, $to_uri) {
    * @return bool
    *   FALSE as directory will never be created.
    *
-   * @see http://php.net/manual/en/streamwrapper.mkdir.php
+   * @see http://php.net/manual/streamwrapper.mkdir.php
    */
   public function mkdir($uri, $mode, $options) {
     trigger_error('mkdir() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -220,7 +220,7 @@ public function mkdir($uri, $mode, $options) {
    * @return bool
    *   FALSE as directory will never be deleted.
    *
-   * @see http://php.net/manual/en/streamwrapper.rmdir.php
+   * @see http://php.net/manual/streamwrapper.rmdir.php
    */
   public function rmdir($uri, $options) {
     trigger_error('rmdir() not supported for read-only stream wrappers', E_USER_WARNING);
diff --git a/core/lib/Drupal/Core/StreamWrapper/PhpStreamWrapperInterface.php b/core/lib/Drupal/Core/StreamWrapper/PhpStreamWrapperInterface.php
index de6d66e..5091b8f 100644
--- a/core/lib/Drupal/Core/StreamWrapper/PhpStreamWrapperInterface.php
+++ b/core/lib/Drupal/Core/StreamWrapper/PhpStreamWrapperInterface.php
@@ -10,7 +10,7 @@
 /**
  * Defines a generic PHP stream wrapper interface.
  *
- * @see http://www.php.net/manual/class.streamwrapper.php
+ * @see http://php.net/manual/class.streamwrapper.php
  */
 interface PhpStreamWrapperInterface {
 
@@ -116,7 +116,7 @@ public function stream_lock($operation);
    *   Returns TRUE on success or FALSE on failure. If $option is not
    *   implemented, FALSE should be returned.
    *
-   * @see http://www.php.net/manual/streamwrapper.stream-metadata.php
+   * @see http://php.net/manual/streamwrapper.stream-metadata.php
    */
   public function stream_metadata($path, $option, $value);
 
diff --git a/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php b/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php
index a7201d2..cc6da4b 100644
--- a/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php
+++ b/core/lib/Drupal/Core/StreamWrapper/ReadOnlyStream.php
@@ -138,7 +138,7 @@ public function stream_lock($operation) {
    * @return bool
    *   FALSE as data will not be written.
    *
-   * @see http://php.net/manual/en/streamwrapper.stream-write.php
+   * @see http://php.net/manual/streamwrapper.stream-write.php
    */
   public function stream_write($data) {
     trigger_error('stream_write() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -192,7 +192,7 @@ public function stream_truncate($new_size) {
    *   TRUE so that file_delete() will remove db reference to file. File is not
    *   actually deleted.
    *
-   * @see http://php.net/manual/en/streamwrapper.unlink.php
+   * @see http://php.net/manual/streamwrapper.unlink.php
    */
   public function unlink($uri) {
     trigger_error('unlink() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -212,7 +212,7 @@ public function unlink($uri) {
    * @return bool
    *   FALSE as file will never be renamed.
    *
-   * @see http://php.net/manual/en/streamwrapper.rename.php
+   * @see http://php.net/manual/streamwrapper.rename.php
    */
   public function rename($from_uri, $to_uri) {
     trigger_error('rename() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -234,7 +234,7 @@ public function rename($from_uri, $to_uri) {
    * @return bool
    *   FALSE as directory will never be created.
    *
-   * @see http://php.net/manual/en/streamwrapper.mkdir.php
+   * @see http://php.net/manual/streamwrapper.mkdir.php
    */
   public function mkdir($uri, $mode, $options) {
     trigger_error('mkdir() not supported for read-only stream wrappers', E_USER_WARNING);
@@ -254,7 +254,7 @@ public function mkdir($uri, $mode, $options) {
    * @return bool
    *   FALSE as directory will never be deleted.
    *
-   * @see http://php.net/manual/en/streamwrapper.rmdir.php
+   * @see http://php.net/manual/streamwrapper.rmdir.php
    */
   public function rmdir($uri, $options) {
     trigger_error('rmdir() not supported for read-only stream wrappers', E_USER_WARNING);
diff --git a/core/lib/Drupal/Core/Template/TwigExtension.php b/core/lib/Drupal/Core/Template/TwigExtension.php
index 69f3298..5b71c52 100644
--- a/core/lib/Drupal/Core/Template/TwigExtension.php
+++ b/core/lib/Drupal/Core/Template/TwigExtension.php
@@ -432,7 +432,7 @@ public function escapeFilter(\Twig_Environment $env, $arg, $strategy = 'html', $
         $return = (string) $arg;
       }
       // You can't throw exceptions in the magic PHP __toString methods, see
-      // http://php.net/manual/en/language.oop5.magic.php#object.tostring so
+      // http://php.net/manual/language.oop5.magic.php#object.tostring so
       // we also support a toString method.
       elseif (method_exists($arg, 'toString')) {
         $return = $arg->toString();
@@ -510,7 +510,7 @@ public function renderVar($arg) {
         return (string) $arg;
       }
       // You can't throw exceptions in the magic PHP __toString methods, see
-      // http://php.net/manual/en/language.oop5.magic.php#object.tostring so
+      // http://php.net/manual/language.oop5.magic.php#object.tostring so
       // we also support a toString method.
       elseif (method_exists($arg, 'toString')) {
         return $arg->toString();
diff --git a/core/lib/Drupal/Core/TypedData/Plugin/DataType/BinaryData.php b/core/lib/Drupal/Core/TypedData/Plugin/DataType/BinaryData.php
index e9a3abc..882bc7b 100644
--- a/core/lib/Drupal/Core/TypedData/Plugin/DataType/BinaryData.php
+++ b/core/lib/Drupal/Core/TypedData/Plugin/DataType/BinaryData.php
@@ -14,7 +14,7 @@
  * The binary data type.
  *
  * The plain value of binary data is a PHP file resource, see
- * http://php.net/manual/en/language.types.resource.php. For setting the value
+ * http://php.net/manual/language.types.resource.php. For setting the value
  * a PHP file resource or a (absolute) stream resource URI may be passed.
  *
  * @DataType(
diff --git a/core/modules/aggregator/aggregator.install b/core/modules/aggregator/aggregator.install
index a763639..e236628 100644
--- a/core/modules/aggregator/aggregator.install
+++ b/core/modules/aggregator/aggregator.install
@@ -17,7 +17,7 @@ function aggregator_requirements($phase) {
   );
   if (!$has_curl) {
     $requirements['curl']['severity'] = REQUIREMENT_ERROR;
-    $requirements['curl']['description'] = t('The Aggregator module could not be installed because the PHP <a href=":curl_url">cURL</a> library is not available.', array(':curl_url' => 'http://php.net/manual/curl.setup.php'));
+    $requirements['curl']['description'] = t('The Aggregator module could not be installed because the PHP <a href="http://php.net/manual/curl.setup.php">cURL</a> library is not available.');
   }
   return $requirements;
 }
diff --git a/core/modules/color/color.install b/core/modules/color/color.install
index aa2dd47..7f61338 100644
--- a/core/modules/color/color.install
+++ b/core/modules/color/color.install
@@ -22,14 +22,14 @@ function color_requirements($phase) {
       // Check for PNG support.
       if (!function_exists('imagecreatefrompng')) {
         $requirements['color_gd']['severity'] = REQUIREMENT_WARNING;
-        $requirements['color_gd']['description'] = t('The GD library for PHP is enabled, but was compiled without PNG support. Check the <a href=":url">PHP image documentation</a> for information on how to correct this.', array(':url' => 'http://www.php.net/manual/ref.image.php'));
+        $requirements['color_gd']['description'] = t('The GD library for PHP is enabled, but was compiled without PNG support. Check the <a href="http://php.net/manual/ref.image.php">PHP image documentation</a> for information on how to correct this.');
       }
     }
     else {
       $requirements['color_gd'] = array(
         'value' => t('Not installed'),
         'severity' => REQUIREMENT_ERROR,
-        'description' => t('The GD library for PHP is missing or outdated. Check the <a href=":url">PHP image documentation</a> for information on how to correct this.', array(':url' => 'http://www.php.net/manual/book.image.php')),
+        'description' => t('The GD library for PHP is missing or outdated. Check the <a href="http://php.net/manual/book.image.php">PHP image documentation</a> for information on how to correct this.'),
       );
     }
     $requirements['color_gd']['title'] = t('GD library PNG support');
diff --git a/core/modules/color/color.module b/core/modules/color/color.module
index dd48e4a..dcf477c 100644
--- a/core/modules/color/color.module
+++ b/core/modules/color/color.module
@@ -410,7 +410,7 @@ function color_scheme_form_submit($form, FormStateInterface $form_state) {
     $memory_limit = ini_get('memory_limit');
     $size = Bytes::toInt($memory_limit);
     if (!Environment::checkMemoryLimit($usage + $required, $memory_limit)) {
-      drupal_set_message(t('There is not enough memory available to PHP to change this theme\'s color scheme. You need at least %size more. Check the <a href=":url">PHP documentation</a> for more information.', array('%size' => format_size($usage + $required - $size), ':url' => 'http://www.php.net/manual/ini.core.php#ini.sect.resource-limits')), 'error');
+      drupal_set_message(t('There is not enough memory available to PHP to change this theme\'s color scheme. You need at least %size more. Check the <a href="http://php.net/manual/ini.core.php#ini.sect.resource-limits">PHP documentation</a> for more information.', array('%size' => format_size($usage + $required - $size))), 'error');
       return;
     }
   }
diff --git a/core/modules/config_translation/src/FormElement/DateFormat.php b/core/modules/config_translation/src/FormElement/DateFormat.php
index 6395a92..a39da17 100644
--- a/core/modules/config_translation/src/FormElement/DateFormat.php
+++ b/core/modules/config_translation/src/FormElement/DateFormat.php
@@ -20,7 +20,7 @@ class DateFormat extends FormElementBase {
   public function getTranslationElement(LanguageInterface $translation_language, $source_config, $translation_config) {
     /** @var \Drupal\Core\Datetime\DateFormatterInterface $date_formatter */
     $date_formatter = \Drupal::service('date.formatter');
-    $description = $this->t('A user-defined date format. See the <a href=":url">PHP manual</a> for available options.', array(':url' => 'http://php.net/manual/function.date.php'));
+    $description = $this->t('A user-defined date format. See the <a href="http://php.net/manual/function.date.php">PHP manual</a> for available options.');
     $format = $this->t('Displayed as %date_format', array('%date_format' => $date_formatter->format(REQUEST_TIME, 'custom', $translation_config)));
 
     return [
diff --git a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php
index af6fd37..5b53a8f 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldFormatter/DateTimeCustomFormatter.php
@@ -84,7 +84,7 @@ public function settingsForm(array $form, FormStateInterface $form_state) {
     $form['date_format'] = array(
       '#type' => 'textfield',
       '#title' => $this->t('Date/time format'),
-      '#description' => $this->t('See <a href=":url" target="_blank">the documentation for PHP date formats</a>.', [':url' => 'http://php.net/manual/function.date.php']),
+      '#description' => $this->t('See <a href="http://php.net/manual/function.date.php" target="_blank">the documentation for PHP date formats</a>.'),
       '#default_value' => $this->getSetting('date_format'),
     );
 
diff --git a/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeFieldItemList.php b/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeFieldItemList.php
index e277c14..3998900 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeFieldItemList.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeFieldItemList.php
@@ -51,7 +51,7 @@ public function defaultValuesForm(array &$form, FormStateInterface $form_state)
         'default_date' => array(
           '#type' => 'textfield',
           '#title' => t('Relative default value'),
-          '#description' => t("Describe a time by reference to the current day, like '+90 days' (90 days from the day the field is created) or '+1 Saturday' (the next Saturday). See <a href=\"@url\">@strtotime</a> for more details.", array('@strtotime' => 'strtotime', '@url' => 'http://www.php.net/manual/en/function.strtotime.php')),
+          '#description' => t("Describe a time by reference to the current day, like '+90 days' (90 days from the day the field is created) or '+1 Saturday' (the next Saturday). See <a href=\"http://php.net/manual/function.strtotime.php\">strtotime</a> for more details."),
           '#default_value' => (isset($default_value[0]['default_date_type']) && $default_value[0]['default_date_type'] == static::DEFAULT_VALUE_CUSTOM) ? $default_value[0]['default_date'] : '',
           '#states' => array(
             'visible' => array(
diff --git a/core/modules/file/file.install b/core/modules/file/file.install
index 4c91e23..c7a7330 100644
--- a/core/modules/file/file.install
+++ b/core/modules/file/file.install
@@ -98,18 +98,18 @@ function file_requirements($phase) {
     }
     elseif (!$implementation && extension_loaded('apc')) {
       $value = t('Not enabled');
-      $description = t('Your server is capable of displaying file upload progress through APC, but it is not enabled. Add <code>apc.rfc1867 = 1</code> to your php.ini configuration. Alternatively, it is recommended to use <a href=":url">PECL uploadprogress</a>, which supports more than one simultaneous upload.', array(':url' => 'http://pecl.php.net/package/uploadprogress'));
+      $description = t('Your server is capable of displaying file upload progress through APC, but it is not enabled. Add <code>apc.rfc1867 = 1</code> to your php.ini configuration. Alternatively, it is recommended to use <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>, which supports more than one simultaneous upload.');
     }
     elseif (!$implementation) {
       $value = t('Not enabled');
-      $description = t('Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the <a href=":uploadprogress_url">PECL uploadprogress library</a> (preferred) or to install <a href=":apc_url">APC</a>.', array(':uploadprogress_url' => 'http://pecl.php.net/package/uploadprogress', ':apc_url' => 'http://php.net/apc'));
+      $description = t('Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> (preferred) or to install <a href="http://php.net/apc">APC</a>.');
     }
     elseif ($implementation == 'apc') {
-      $value = t('Enabled (<a href=":url">APC RFC1867</a>)', array(':url' => 'http://php.net/manual/apc.configuration.php#ini.apc.rfc1867'));
-      $description = t('Your server is capable of displaying file upload progress using APC RFC1867. Note that only one upload at a time is supported. It is recommended to use the <a href=":url">PECL uploadprogress library</a> if possible.', array(':url' => 'http://pecl.php.net/package/uploadprogress'));
+      $value = t('Enabled (<a href="http://php.net/manual/apc.configuration.php#ini.apc.rfc1867">APC RFC1867</a>)');
+      $description = t('Your server is capable of displaying file upload progress using APC RFC1867. Note that only one upload at a time is supported. It is recommended to use the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> if possible.');
     }
     elseif ($implementation == 'uploadprogress') {
-      $value = t('Enabled (<a href=":url">PECL uploadprogress</a>)', array(':url' => 'http://pecl.php.net/package/uploadprogress'));
+      $value = t('Enabled (<a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>)');
     }
     $requirements['file_progress'] = array(
       'title' => t('Upload progress'),
diff --git a/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php b/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php
index ad3418f..ab479f3 100644
--- a/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php
+++ b/core/modules/file/src/Plugin/Field/FieldFormatter/RSSEnclosureFormatter.php
@@ -28,7 +28,7 @@ class RSSEnclosureFormatter extends FileFormatterBase {
   public function viewElements(FieldItemListInterface $items, $langcode) {
     $entity = $items->getEntity();
     // Add the first file as an enclosure to the RSS item. RSS allows only one
-    // enclosure per item. See: http://en.wikipedia.org/wiki/RSS_enclosure
+    // enclosure per item. See: http://wikipedia.org/wiki/RSS_enclosure
     foreach ($this->getEntitiesToView($items, $langcode) as $delta => $file) {
       $entity->rss_elements[] = array(
         'key' => 'enclosure',
diff --git a/core/modules/file/src/Tests/DownloadTest.php b/core/modules/file/src/Tests/DownloadTest.php
index 997eb56..20289e7 100644
--- a/core/modules/file/src/Tests/DownloadTest.php
+++ b/core/modules/file/src/Tests/DownloadTest.php
@@ -95,7 +95,7 @@ function testFileCreateUrl() {
 
     // Tilde (~) is excluded from this test because it is encoded by
     // rawurlencode() in PHP 5.2 but not in PHP 5.3, as per RFC 3986.
-    // @see http://www.php.net/manual/function.rawurlencode.php#86506
+    // @see http://php.net/manual/function.rawurlencode.php#86506
     $basename = " -._!$'\"()*@[]?&+%#,;=:\n\x00" . // "Special" ASCII characters.
       "%23%25%26%2B%2F%3F" . // Characters that look like a percent-escaped string.
       "éøïвβ中國書۞"; // Characters from various non-ASCII alphabets.
diff --git a/core/modules/hal/hal.module b/core/modules/hal/hal.module
index 90696d4..eaf06c1 100644
--- a/core/modules/hal/hal.module
+++ b/core/modules/hal/hal.module
@@ -16,7 +16,7 @@ function hal_help($route_name, RouteMatchInterface $route_match) {
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
       $output .= '<p>' . t('<a href=":hal_spec">Hypertext Application Language (HAL)</a> is a format that supports the linking required for hypermedia APIs.', array(':hal_spec' => 'http://stateless.co/hal_specification.html')) . '</p>';
-      $output .= '<p>' . t('Hypermedia APIs are a style of Web API that uses URIs to identify resources and the <a href=":link_rel">link relations</a> between them, enabling API consumers to follow links to discover API functionality.', array(':link_rel' => 'http://en.wikipedia.org/wiki/Link_relation')) . '</p>';
+      $output .= '<p>' . t('Hypermedia APIs are a style of Web API that uses URIs to identify resources and the <a href="http://wikipedia.org/wiki/Link_relation">link relations</a> between them, enabling API consumers to follow links to discover API functionality.') . '</p>';
       $output .= '<p>' . t('This module adds support for serializing entities (such as content items, taxonomy terms, etc.) to the JSON version of HAL. For more information, see the <a href=":hal_do">online documentation for the HAL module</a>.', array(':hal_do' => 'https://www.drupal.org/documentation/modules/hal')) . '</p>';
       return $output;
   }
diff --git a/core/modules/image/image.module b/core/modules/image/image.module
index 2c222f8..02f195a 100644
--- a/core/modules/image/image.module
+++ b/core/modules/image/image.module
@@ -66,7 +66,7 @@ function image_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<dd>' . t('For accessibility and search engine optimization, all images that convey meaning on web sites should have alternate text. Drupal also allows entry of title text for images, but it can lead to confusion for screen reader users and its use is not recommended. Image fields can be configured so that alternate and title text fields are enabled or disabled; if enabled, the fields can be set to be required. The recommended setting is to enable and require alternate text and disable title text.') . '</dd>';
       $output .= '<dd>' . t('When you create an image field, you will need to choose whether the uploaded images will be stored in the public or private file directory defined in your settings.php file and shown on the <a href=":file-system">File system page</a>. This choice cannot be changed later. You can also configure your field to store files in a subdirectory of the public or private directory; this setting can be changed later and can be different for each entity sub-type using the field. For more information on file storage, see the <a href=":system-help">System module help page</a>.', array(':file-system' => \Drupal::url('system.file_system_settings'), ':system-help' => \Drupal::url('help.page', array('name' => 'system')))) . '</dd>';
       $output .= '<dd>' . t('The maximum file size that can be uploaded is limited by PHP settings of the server, but you can restrict it further by configuring a <em>Maximum upload size</em> in the field settings (this setting can be changed later). The maximum file size, either from PHP server settings or field configuration, is automatically displayed to users in the help text of the image field.') . '</dd>';
-      $output .= '<dd>' . t('You can also configure a minimum and/or maximum resolution for uploaded images. Images that are too small will be rejected. Images that are to large will be resized. During the resizing the <a href=":exif">EXIF data</a> in the image will be lost.', array(':exif' => 'http://en.wikipedia.org/wiki/Exchangeable_image_file_format')) . '</dd>';
+      $output .= '<dd>' . t('You can also configure a minimum and/or maximum resolution for uploaded images. Images that are too small will be rejected. Images that are to large will be resized. During the resizing the <a href="http://wikipedia.org/wiki/Exchangeable_image_file_format">EXIF data</a> in the image will be lost.') . '</dd>';
       $output .= '<dd>' . t('You can also configure a default image that will be used if no image is uploaded in an image field. This default can be defined for all instances of the field in the field storage settings when you create a field, and the setting can be overridden for each entity sub-type that uses the field.') . '</dd>';
       $output .= '<dt>' . t('Configuring displays and form displays') . '</dt>';
       $output .= '<dd>' . t('On the <em>Manage display</em> page, you can choose the image formatter, which determines the image style used to display the image in each display mode and whether or not to display the image as a link. On the <em>Manage form display</em> page, you can configure the image upload widget, including setting the preview image style shown on the entity edit form.') . '</dd>';
diff --git a/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php b/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php
index 9ec3b67..656c6e1 100644
--- a/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php
+++ b/core/modules/image/src/Plugin/Field/FieldType/ImageItem.php
@@ -212,7 +212,7 @@ public function fieldSettingsForm(array $form, FormStateInterface $form_state) {
       '#weight' => 4.1,
       '#field_prefix' => '<div class="container-inline">',
       '#field_suffix' => '</div>',
-      '#description' => t('The maximum allowed image size expressed as WIDTH×HEIGHT (e.g. 640×480). Leave blank for no restriction. If a larger image is uploaded, it will be resized to reflect the given width and height. Resizing images on upload will cause the loss of <a href=":url">EXIF data</a> in the image.', array(':url' => 'http://en.wikipedia.org/wiki/Exchangeable_image_file_format')),
+      '#description' => t('The maximum allowed image size expressed as WIDTH×HEIGHT (e.g. 640×480). Leave blank for no restriction. If a larger image is uploaded, it will be resized to reflect the given width and height. Resizing images on upload will cause the loss of <a href="http://wikipedia.org/wiki/Exchangeable_image_file_format">EXIF data</a> in the image.'),
     );
     $element['max_resolution']['x'] = array(
       '#type' => 'number',
diff --git a/core/modules/options/src/Plugin/Field/FieldType/ListFloatItem.php b/core/modules/options/src/Plugin/Field/FieldType/ListFloatItem.php
index 870ad91..ff2e25c 100644
--- a/core/modules/options/src/Plugin/Field/FieldType/ListFloatItem.php
+++ b/core/modules/options/src/Plugin/Field/FieldType/ListFloatItem.php
@@ -104,7 +104,7 @@ public static function simplifyAllowedValues(array $structured_values) {
       // Cast the value to a float first so that .5 and 0.5 are the same value
       // and then cast to a string so that values like 0.5 can be used as array
       // keys.
-      // @see http://php.net/manual/en/language.types.array.php
+      // @see http://php.net/manual/language.types.array.php
       $values[(string) (float) $item['value']] = $item['label'];
     }
     return $values;
diff --git a/core/modules/simpletest/simpletest.install b/core/modules/simpletest/simpletest.install
index c501624..a7e4862 100644
--- a/core/modules/simpletest/simpletest.install
+++ b/core/modules/simpletest/simpletest.install
@@ -28,7 +28,7 @@ function simpletest_requirements($phase) {
   );
   if (!$has_curl) {
     $requirements['curl']['severity'] = REQUIREMENT_ERROR;
-    $requirements['curl']['description'] = t('The testing framework could not be installed because the PHP <a href=":curl_url">cURL</a> library is not available.', array(':curl_url' => 'http://php.net/manual/curl.setup.php'));
+    $requirements['curl']['description'] = t('The testing framework could not be installed because the PHP <a href="http://php.net/manual/curl.setup.php">cURL</a> library is not available.');
   }
 
   $requirements['php_domdocument'] = array(
@@ -49,7 +49,7 @@ function simpletest_requirements($phase) {
   );
   if ($open_basedir) {
     $requirements['php_open_basedir']['severity'] = REQUIREMENT_ERROR;
-    $requirements['php_open_basedir']['description'] = t('The testing framework requires the PHP <a href=":open_basedir-url">open_basedir</a> restriction to be disabled. Check your webserver configuration or contact your web host.', array(':open_basedir-url' => 'http://php.net/manual/ini.core.php#ini.open-basedir'));
+    $requirements['php_open_basedir']['description'] = t('The testing framework requires the PHP <a href="http://php.net/manual/ini.core.php#ini.open-basedir">open_basedir</a> restriction to be disabled. Check your webserver configuration or contact your web host.');
   }
 
   // Check the current memory limit. If it is set too low, SimpleTest will fail
diff --git a/core/modules/simpletest/src/TestBase.php b/core/modules/simpletest/src/TestBase.php
index 60ad260..01870a7 100644
--- a/core/modules/simpletest/src/TestBase.php
+++ b/core/modules/simpletest/src/TestBase.php
@@ -314,7 +314,7 @@
    * HTTP authentication method (specified as a CURLAUTH_* constant).
    *
    * @var int
-   * @see http://php.net/manual/en/function.curl-setopt.php
+   * @see http://php.net/manual/function.curl-setopt.php
    */
   protected $httpAuthMethod = CURLAUTH_BASIC;
 
diff --git a/core/modules/simpletest/src/WebTestBase.php b/core/modules/simpletest/src/WebTestBase.php
index 1e3bfdb..f1c1a14 100644
--- a/core/modules/simpletest/src/WebTestBase.php
+++ b/core/modules/simpletest/src/WebTestBase.php
@@ -1306,7 +1306,7 @@ protected function curlInitialize() {
    * @param $curl_options
    *   An associative array of cURL options to set, where the keys are constants
    *   defined by the cURL library. For a list of valid options, see
-   *   http://www.php.net/manual/function.curl-setopt.php
+   *   http://php.net/manual/function.curl-setopt.php
    * @param $redirect
    *   FALSE if this is an initial request, TRUE if this request is the result
    *   of a redirect.
diff --git a/core/modules/syslog/syslog.module b/core/modules/syslog/syslog.module
index e74d993..68fe614 100644
--- a/core/modules/syslog/syslog.module
+++ b/core/modules/syslog/syslog.module
@@ -17,7 +17,7 @@ function syslog_help($route_name, RouteMatchInterface $route_match) {
     case 'help.page.syslog':
       $output = '';
       $output .= '<h3>' . t('About') . '</h3>';
-      $output .= '<p>' . t('The Syslog module logs events by sending messages to the logging facility of your web server\'s operating system. Syslog is an operating system administrative logging tool that provides valuable information for use in system management and security auditing. Most suited to medium and large sites, Syslog provides filtering tools that allow messages to be routed by type and severity. For more information, see the <a href=":syslog">online documentation for the Syslog module</a>, as well as PHP\'s documentation pages for the <a href=":php_openlog">openlog</a> and <a href=":php_syslog">syslog</a> functions.', array(':syslog' => 'https://www.drupal.org/documentation/modules/syslog', ':php_openlog' => 'http://www.php.net/manual/function.openlog.php', ':php_syslog' => 'http://www.php.net/manual/function.syslog.php')) . '</p>';
+      $output .= '<p>' . t('The Syslog module logs events by sending messages to the logging facility of your web server\'s operating system. Syslog is an operating system administrative logging tool that provides valuable information for use in system management and security auditing. Most suited to medium and large sites, Syslog provides filtering tools that allow messages to be routed by type and severity. For more information, see the <a href=":syslog">online documentation for the Syslog module</a>, as well as PHP\'s documentation pages for the <a href="http://php.net/manual/function.openlog.php">openlog</a> and <a href="http://php.net/manual/function.syslog.php">syslog</a> functions.', array(':syslog' => 'https://www.drupal.org/documentation/modules/syslog')) . '</p>';
       $output .= '<h3>' . t('Uses') . '</h3>';
       $output .= '<dl>';
       $output .= '<dt>' . t('Logging for UNIX, Linux, and Mac OS X') . '</dt>';
diff --git a/core/modules/system/src/Form/DateFormatFormBase.php b/core/modules/system/src/Form/DateFormatFormBase.php
index 252fba4..d5868b5 100644
--- a/core/modules/system/src/Form/DateFormatFormBase.php
+++ b/core/modules/system/src/Form/DateFormatFormBase.php
@@ -104,7 +104,7 @@ public function form(array $form, FormStateInterface $form_state) {
       '#type' => 'textfield',
       '#title' => t('Format string'),
       '#maxlength' => 100,
-      '#description' => $this->t('A user-defined date format. See the <a href=":url">PHP manual</a> for available options.', array(':url' => 'http://php.net/manual/function.date.php')),
+      '#description' => $this->t('A user-defined date format. See the <a href="http://php.net/manual/function.date.php">PHP manual</a> for available options.'),
       '#required' => TRUE,
       '#attributes' => [
         'data-drupal-date-formatter' => 'source',
diff --git a/core/modules/system/src/Plugin/ImageToolkit/GDToolkit.php b/core/modules/system/src/Plugin/ImageToolkit/GDToolkit.php
index f9cfb53..3314623 100644
--- a/core/modules/system/src/Plugin/ImageToolkit/GDToolkit.php
+++ b/core/modules/system/src/Plugin/ImageToolkit/GDToolkit.php
@@ -53,7 +53,7 @@ class GDToolkit extends ImageToolkitBase {
    *
    * @see \Drupal\system\Plugin\ImageToolkit\GDToolkit::parseFile()
    * @see \Drupal\system\Plugin\ImageToolkit\GDToolkit::setResource()
-   * @see http://php.net/manual/en/function.getimagesize.php
+   * @see http://php.net/manual/function.getimagesize.php
    */
   protected $preLoadInfo = NULL;
 
@@ -378,7 +378,7 @@ public function getRequirements() {
     // Check for filter and rotate support.
     if (!function_exists('imagefilter') || !function_exists('imagerotate')) {
       $requirements['version']['severity'] = REQUIREMENT_WARNING;
-      $requirements['version']['description'] = t('The GD Library for PHP is enabled, but was compiled without support for functions used by the rotate and desaturate effects. It was probably compiled using the official GD libraries from http://www.libgd.org instead of the GD library bundled with PHP. You should recompile PHP --with-gd using the bundled GD library. See <a href=":url">the PHP manual</a>.', array(':url' => 'http://www.php.net/manual/book.image.php'));
+      $requirements['version']['description'] = t('The GD Library for PHP is enabled, but was compiled without support for functions used by the rotate and desaturate effects. It was probably compiled using the official GD libraries from http://www.libgd.org instead of the GD library bundled with PHP. You should recompile PHP --with-gd using the bundled GD library. See <a href="http://php.net/manual/book.image.php">the PHP manual</a>.');
     }
 
     return $requirements;
diff --git a/core/modules/system/src/Tests/Ajax/AjaxTestBase.php b/core/modules/system/src/Tests/Ajax/AjaxTestBase.php
index a4c7bfc..c9edeb5 100644
--- a/core/modules/system/src/Tests/Ajax/AjaxTestBase.php
+++ b/core/modules/system/src/Tests/Ajax/AjaxTestBase.php
@@ -56,7 +56,7 @@ protected function assertCommand($haystack, $needle, $message) {
       // If the command has additional data that we're not testing for, do not
       // consider that a failure. Also, == instead of ===, because we don't
       // require the key/value pairs to be in any particular order
-      // (http://www.php.net/manual/language.operators.array.php).
+      // (http://php.net/manual/language.operators.array.php).
       if (array_intersect_key($command, $needle) == $needle) {
         $found = TRUE;
         break;
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index afa5892..fde1436 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -246,7 +246,7 @@ function system_requirements($phase) {
       $requirements['php_opcache'] = array(
         'value' => t('Not enabled'),
         'severity' => REQUIREMENT_WARNING,
-        'description' => t('PHP OPcode caching can improve your site\'s performance considerably. It is <strong>highly recommended</strong> to have <a href=":opcache_link" target="_blank">OPcache</a> installed on your server.', array(':opcache_link' => 'http://php.net/manual/en/opcache.installation.php')),
+        'description' => t('PHP OPcode caching can improve your site\'s performance considerably. It is <strong>highly recommended</strong> to have <a href="http://php.net/manual/opcache.installation.php" target="_blank">OPcache</a> installed on your server.'),
       );
     }
     else {
diff --git a/core/modules/views/src/Plugin/views/PluginBase.php b/core/modules/views/src/Plugin/views/PluginBase.php
index 462d53f..3821230 100644
--- a/core/modules/views/src/Plugin/views/PluginBase.php
+++ b/core/modules/views/src/Plugin/views/PluginBase.php
@@ -369,7 +369,7 @@ protected function viewsTokenReplace($text, $tokens) {
       if (strpos($token, '.') === FALSE) {
         // We need to validate tokens are valid Twig variables. Twig uses the
         // same variable naming rules as PHP.
-        // @see http://php.net/manual/en/language.variables.basics.php
+        // @see http://php.net/manual/language.variables.basics.php
         assert('preg_match(\'/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/\', $token) === 1', 'Tokens need to be valid Twig variables.');
         $twig_tokens[$token] = $replacement;
       }
diff --git a/core/modules/views/src/Plugin/views/query/Sql.php b/core/modules/views/src/Plugin/views/query/Sql.php
index 85356fc..25374c0 100644
--- a/core/modules/views/src/Plugin/views/query/Sql.php
+++ b/core/modules/views/src/Plugin/views/query/Sql.php
@@ -1838,7 +1838,7 @@ public function getDateFormat($field, $format, $string_date = FALSE) {
 
         // SQLite does not have a ISO week substitution string, so it needs
         // special handling.
-        // @see http://en.wikipedia.org/wiki/ISO_week_date#Calculation
+        // @see http://wikipedia.org/wiki/ISO_week_date#Calculation
         // @see http://stackoverflow.com/a/15511864/1499564
         if ($format === '%W') {
           $expression = "((strftime('%j', date(strftime('%Y-%m-%d', $field" . $unixepoch . "), '-3 days', 'weekday 4')) - 1) / 7 + 1)";
diff --git a/core/modules/views/src/Tests/Handler/ArgumentDateTest.php b/core/modules/views/src/Tests/Handler/ArgumentDateTest.php
index d0939b1..7d96b27 100644
--- a/core/modules/views/src/Tests/Handler/ArgumentDateTest.php
+++ b/core/modules/views/src/Tests/Handler/ArgumentDateTest.php
@@ -175,7 +175,7 @@ public function testWeekHandler() {
     $view = Views::getView('test_argument_date');
     $view->setDisplay('embed_3');
     // Check the week calculation for a leap year.
-    // @see http://en.wikipedia.org/wiki/ISO_week_date#Calculation
+    // @see http://wikipedia.org/wiki/ISO_week_date#Calculation
     $this->executeView($view, array('39'));
     $expected = array();
     $expected[] = array('id' => 1);
@@ -184,7 +184,7 @@ public function testWeekHandler() {
 
     $view->setDisplay('embed_3');
     // Check the week calculation for the 29th of February in a leap year.
-    // @see http://en.wikipedia.org/wiki/ISO_week_date#Calculation
+    // @see http://wikipedia.org/wiki/ISO_week_date#Calculation
     $this->executeView($view, array('09'));
     $expected = array();
     $expected[] = array('id' => 2);
diff --git a/core/modules/views/src/Tests/Handler/FieldDateTest.php b/core/modules/views/src/Tests/Handler/FieldDateTest.php
index 004118f..525621f 100644
--- a/core/modules/views/src/Tests/Handler/FieldDateTest.php
+++ b/core/modules/views/src/Tests/Handler/FieldDateTest.php
@@ -80,7 +80,7 @@ public function testFieldDate() {
         'table' => 'views_test_data',
         'field' => 'created',
         'relationship' => 'none',
-        // ISO 8601 format @see http://php.net/manual/en/function.date.php
+        // ISO 8601 format, see http://php.net/manual/function.date.php
         'custom_date_format' => 'c',
       ),
       'destroyed' => array(
diff --git a/core/modules/views/src/Tests/Handler/SortRandomTest.php b/core/modules/views/src/Tests/Handler/SortRandomTest.php
index 9a9b5a6..0fe29ac 100644
--- a/core/modules/views/src/Tests/Handler/SortRandomTest.php
+++ b/core/modules/views/src/Tests/Handler/SortRandomTest.php
@@ -34,7 +34,7 @@ class SortRandomTest extends ViewKernelTestBase {
    * of protons / electrons in the observable universe, also called the
    * eddington number.
    *
-   * @see http://en.wikipedia.org/wiki/Eddington_number
+   * @see http://wikipedia.org/wiki/Eddington_number
    */
   protected function dataSet() {
     $data = parent::dataSet();
diff --git a/core/scripts/run-tests.sh b/core/scripts/run-tests.sh
index bf46a40..9296128 100755
--- a/core/scripts/run-tests.sh
+++ b/core/scripts/run-tests.sh
@@ -1292,7 +1292,7 @@ function simpletest_script_color_code($status) {
  * Searches the provided array of string values for close matches based on the
  * Levenshtein algorithm.
  *
- * @see http://php.net/manual/en/function.levenshtein.php
+ * @see http://php.net/manual/function.levenshtein.php
  *
  * @param string $string
  *   A string to test.
diff --git a/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php b/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php
index de7f428..470d255 100644
--- a/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php
+++ b/core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php
@@ -118,7 +118,7 @@ public function providerTestPhpTransliteration() {
     // http://www.unicode.org/charts/PDF/U1400.pdf
     $four_byte = html_entity_decode('&#x1411;', ENT_NOQUOTES, 'UTF-8');
     // These are two Gothic alphabet letters. See
-    // http://en.wikipedia.org/wiki/Gothic_alphabet
+    // http://wikipedia.org/wiki/Gothic_alphabet
     // They are not in our tables, but should at least give us '?' (unknown).
     $five_byte = html_entity_decode('&#x10330;&#x10338;', ENT_NOQUOTES, 'UTF-8');
 
diff --git a/core/tests/Drupal/Tests/Component/Utility/TimerTest.php b/core/tests/Drupal/Tests/Component/Utility/TimerTest.php
index cfb05dd..79e863f 100644
--- a/core/tests/Drupal/Tests/Component/Utility/TimerTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/TimerTest.php
@@ -39,7 +39,7 @@ public function testTimer() {
 
     // Although we sleep for 5 milliseconds, we should test that at least 4 ms
     // have past because usleep() is not reliable on Windows. See
-    // http://php.net/manual/en/function.usleep.php for more information. The
+    // http://php.net/manual/function.usleep.php for more information. The
     // purpose of the test to validate that the Timer class can measure elapsed
     // time not the granularity of usleep() on a particular OS.
     $this->assertGreaterThanOrEqual(4, $value, 'Timer failed to measure at least 4 milliseconds of sleeping while running.');
diff --git a/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php b/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php
index 6788011..9dc8388 100644
--- a/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php
+++ b/core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php
@@ -50,7 +50,7 @@ public function testPhpTransliterationWithAlter($langcode, $original, $expected,
           // The default transliteration of Ä is A, but change it to Z for testing.
           $overrides[0xC4] = 'Z';
           // Also provide transliterations of two 5-byte characters from
-          // http://en.wikipedia.org/wiki/Gothic_alphabet.
+          // http://wikipedia.org/wiki/Gothic_alphabet.
           $overrides[0x10330] = 'A';
           $overrides[0x10338] = 'Th';
         }
@@ -73,7 +73,7 @@ public function providerTestPhpTransliterationWithAlter() {
     // Note that the 3-byte character is overridden by the 'kg' language.
     $two_byte = 'Ä Ö Ü Å Ø äöüåøhello';
     // These are two Gothic alphabet letters. See
-    // http://en.wikipedia.org/wiki/Gothic_alphabet
+    // http://wikipedia.org/wiki/Gothic_alphabet
     // They are not in our tables, but should at least give us '?' (unknown).
     $five_byte = html_entity_decode('&#x10330;&#x10338;', ENT_NOQUOTES, 'UTF-8');
     // Five-byte characters do not work in MySQL, so make a printable version.