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spl_object_hash
Return hash id for given object
(PHP 5 >= 5.2.0)
string spl_object_hash ( object obj )
This function returns an unique identifier for the object. This id can be used as a hash key for storing objects or for identifying an object.
Return Values
Returns a string that is unique for each object and is always the same for the same object.
Examples
Example 2315. A spl_object_hash() example
<?php
$id = spl_object_hash($object);
$storage[$id] = $object;
?>