Parse JS code function (parse JS variables into PHP arrays)

Useful when collecting.

/*
Parse JS code function
JS code such as:
var pp_link="/videos/41939vod-play-id-41939-(ppvod).html";var pp_vodname="chill";
Parse output:
Array(
 [pp_link] => "/videos/41939vod-play-id-41939-(ppvod).html"
 [pp_vodname] => "Chill"
)

*/
function parse_js($string ){
 $pregString="#var ([a-zA-Z_0-9]+)=([^;]*);#";
 preg_match_all($pregString,$string,$JsArrayPre);
 $num= count($JsArrayPre['0']);
 for($i=0;$i<$num;$i++){
 $jsVarName=$JsArrayPre['1'][$i];
 $JsArray[$ jsVarName]= $JsArrayPre['2'][$i];
 }
 return $JsArray;
}