"; $start = microtime(true); for ($i = 1; $i <= $iterations; $i++) { if(file_exists($file_good)) { //Nothing to do } } $time = microtime(true) - $start; echo "FILE_EXISTS with a good file: $time ms.
"; $start = microtime(true); for ($i = 1; $i <= $iterations; $i++) { if(file_exists($file_bad)) { //Nothing to do } } $time = microtime(true) - $start; echo "FILE_EXISTS with a bad file: $time ms.
"; $start = microtime(true); for ($i = 1; $i <= $iterations; $i++) { if(is_file($file_good)) { //Nothing to do } } $time = microtime(true) - $start; echo "IS_FILE with a good file: $time ms.
"; $start = microtime(true); for ($i = 1; $i <= $iterations; $i++) { if(is_file($file_bad)) { //Nothing to do } } $time = microtime(true) - $start; echo "IS_FILE with a bad file: $time ms.
"; ?>