note 74342 deleted from language.references.spot by danbrown

Note Submitter: Steve Clay 

----

BenBE's function is broken for testing objects. Here's a variation on it just for testing objects:

<?php
function same_obj(&$var1, &$var2) {
    if ($var1 !== $var2) {
        return false;
    }
    $same = false;
    $key = uniqid("same_obj_", true);
    $var1->$key = $key;
    if (isset($var2->$key) && $var2->$key == $key) {
        $same = true;
    }
    unset($var1->$key);
    return $same;
}

// PHP4 references are risilient as array members
$f1 =& new Foo;
$f2 = array(&$f1);
$f3 = $f2;
echo (int)same_obj($f1, $f3[0]); // 1!
?>