Get Instance ID of an Object in PHP

Question

I\'ve learn a while ago on StackOverflow that we can get the \"instance ID\" of any resource, for instance:

var_dump(intval(curl_init()));  // int(2)
var_dum         


        

Answer 1

Alix, your solution in the question was exactly what I needed, but actually breaks when there's an object in an object, returns the last # in the var_dump. I fixed this, made the regex faster, and put it in a nice little function.

/**
 * Get global object ID
 * From: http://stackoverflow.com/questions/2872366/get-instance-id-of-an-object-in-php
 * By: Alix Axel, non-greedy fix by Nate Ferrero
 */
function get_object_id(&$obj) {
    if(!is_object($obj))
        return false;
    ob_start();
    var_dump($obj);// object(foo)#INSTANCE_ID (0) { }
    preg_match('~^.+?#(\d+)~s', ob_get_clean(), $oid);
    return $oid[1]; 
}