php preg_match var length count?

Question

iv got a question in php regex. For example if we use

<?php
 $str = '[code]anything[/code]';
 preg_replace('#\[code\](.*?)\[/code\]#is', 'Code:<pre>$1</pre>', $str)
?>

How i can make some thing like this to count the content

<?php
 $str = '[code]anything[/code]';
 preg_replace('#\[code\](.*?)\[/code\]#is', 'Code:'.strlen($1).'<pre>$1</pre>', $str)
?>

and that is my question. hope i will find answer thanks.

Answer 1

How about:

<?php
   $str = '[code]anything[/code]';
   $code = preg_replace('#\[code\](.*?)\[/code\]#is', '$1', $str);
   $output = 'Code:'.strlen($code).'<pre>'.$code.'</pre>';
?>