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spl_object_id

(PHP 7 >= 7.2.0)

spl_object_id Return the integer object handle for given object

Description

spl_object_id ( object $obj ) : int

This function returns a unique identifier for the object. The object id is unique for the lifetime of the object. Once the object is destroyed, its id may be reused for other objects. This behavior is similar to spl_object_hash().

Parameters

object

Any object.

Return Values

An integer identifier that is unique for each currently existing object and is always the same for each object.

Examples

Example #1 A spl_object_id() example

<?php
$id 
spl_object_id($object);
$storage[$id] = $object;
?>

Notes

Note:

When an object is destroyed, its id may be reused for other objects.

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User Contributed Notes 1 note

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Daniel
2 months ago
Simple example:

<?php
   
class Test {}

   
$test1 = new Test;
   
$test1_id = spl_object_id( $test1 );
   
$test2 = new Test;
   
$test2_id = spl_object_id( $test2 );

   
var_dump( $test1_id === $test2_id );
   
var_dump( $test1_id );
   
var_dump( $test2_id );
?>

Returns
bool(false)
int(5288)
int(5287)
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