Online PHP editor | output for cMcYh

<?php $patternCallbacks = [ '~\[code](.*?)\[/code]~is' => function($m) { return '[code]' . base64_encode($m[1]) . '[/code]'; }, '~\[php(?:=[0-9]+)?]\K(.*?)\[/php]~is' => function($m) { return base64_encode($m[1]) . '[/php]'; }, ]; $text = <<<TEXT This is my [code]script[/code] to display. It has [php]unnumbered tag code[/php] and [php=8]numbered tag code[/php].' TEXT; foreach ($patternCallbacks as $pattern => $callback) { $text = preg_replace_callback($pattern, $callback, $text); } echo $text;