Parsing nested function body PHP - php

Question

i am trying to get this working: It is ment to return any function or method where the different 'functional parts' are subgrouped. I have problems with the maybe nested {..{.{} } } function body. At the moment the search breaks of after the first following }.
I do have a little bit a hard time understanding lock arround and recursive handling of Regs. So if someone would like to give a brief overall view - would be great!
i understand enough for this..The Regex:
to work with preg_* in PHP with "/im" set
([\w ]+)?(function)+([\s]+[\w\d]+)([\s]*?\(([^\)]+)?\))([\s]?\{+[^\}]*\})
Here a sample of use (i dont have named subpatterns on this sample...):
<?php
$s=file_get_contents('sometestcode');
$p='/
([\w ]+)?(function)+([\s]+[\w\d]+)([\s]*?\(([^\)]+)?\))([\s]?\{+[^\}]*\})
/im';
$m=array();
preg_match_all($p,$s,$m,PREG_SET_ORDER);
var_dump($m);
?>
Here comes the output as expected:
// Here the subject:
public static private function __set($name,$val){
$this->DATA[$name] = $val;
foreach( /*do it*/ ){
//work it...
}
return $this;
}
// The return
array(6){
[1]=>
string(7) "public static private " //makes sence, ha?
[2]=>
string(8) "function"
[3]=>
string(6) " __set" // func/meth name
[4]=>
string(12) "($name,$val)"
[5]=>
string(10) "$name,$val" // (if passed)$argument...
[6]=>
string(60) "{
$this->DATA[$name] = $val;
foreach( /*do it*/ ){
//work it...
}
// Here is the my link
// How to style the regExpPress??
}"