Test:
<?
	$data = "try <'to' match \"this\"> in php";
	preg_match_all("'<([^>]+)>'im", $data, $match);
	var_dump($match);
	echo preg_replace("'<([^>]+)>'ime", "Wico('\\1');", $data);

	function Wico ($plop) {
		die("plop: ($plop)");
		return($plop . $plop);
	}
?>

output:
array(2) {
  [0]=>
  array(1) {
    [0]=>
    string(19) "<'to' match "this">"
  
}
  [1]=>
  array(1) {
    [0]=>
    string(17) "'to' match "this""
  
}
}
plop: ('to' match \"this\"> in php)