- var_dump: documentation ( source)
- preg_match: documentation ( source)
- preg_replace: documentation ( source)
<?php
$_content = '$1$2';
preg_match('#(.*)#',$_content, $matches);
$_content = preg_replace('#(.*)#', '<span name="iframe_stretch">$1</span>', $_content);
echo $_content;
var_dump($matches);