3v4l.org

run code in 300+ PHP versions simultaneously
<?php $text = "[spoiler]Test\ntesting[/spoiler]."; $text = preg_replace_callback("/\[spoiler\](.*?)\[\/spoiler\]/", function($match){ $lines = explode("\n", str_rot13(substr($match[0]))); $output = ""; foreach ($lines as $line) { $output .= "[spoiler]".$line."[/spoiler]"; } return $output; }, $text ); echo $text; ?>
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.26, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
[spoiler]Test testing[/spoiler].
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/iiQWl on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/iiQWl on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/iiQWl on line 6
Process exited with code 255.
preferences:
274.6 ms | 401 KiB | 370 Q