This technical tip allows developers to replace text in a PDF file using Saaspose Pdf REST API in your PHP applications.

Sample Code for Replacing Text in a PDF File

$filePath = getcwd() . "\\Input\\MyFile.pdf";
$fileName = basename($filePath);
$oldText = "old text here";
$newText = "new text here";

//set application information
$AppSID = "77**************";
$AppKey = "89***********";

//build URI
echo "Uploading pdf file...
";
$strURIRequest = "http://api.saaspose.com/v1.0" . "/storage/file/" . $fileName;
$signedURI = Sign($strURIRequest);
uploadFileBinary($signedURI, $filePath);
echo "Pdf file has been uploaded successully
";

echo "Replacing text...
";
//Build JSON to post
$fieldsArray = array('OldValue'=>$oldText, 'NewValue'=>$newText, 'Regex'=>"false");
$json = json_encode($fieldsArray);
//Build URI to replace text
$strURI = "http://api.saaspose.com/v1.0" . "/pdf/" . $fileName . "/replaceText";
$signedURI = Sign($strURI);
$responseStream = processCommand($signedURI, "POST", "json", $json);
$v_output = ValidateOutput($responseStream);
if ($v_output === "")
{
//Save PDF file on server
//build URI