SplObjectStorage::attach

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

SplObjectStorage::attachAdds an object in the storage

Warning

This function has been DEPRECATED as of PHP 8.5.0. Relying on this function is highly discouraged.

Description

#[\Deprecated]
public function SplObjectStorage::attach(object $object, mixed $info = null): void

Adds an object inside the storage, and optionally associate it to some data.

This method is an alias of SplObjectStorage::offsetSet().

Parameters

object

The object to add.

info

The data to associate with the object.

Return Values

No value is returned.

Changelog

Version Description
8.5.0 This method has been deprecated in favor of SplObjectStorage::offsetSet().

Examples

Example #1 SplObjectStorage::attach() example

<?php
$o1
= new stdClass;
$o2 = new stdClass;
$s = new SplObjectStorage();
$s->attach($o1); // similar to $s[$o1] = NULL;
$s->attach($o2, "hello"); // similar to $s[$o2] = "hello";

var_dump($s[$o1]);
var_dump($s[$o2]);

?>

The above example will output something similar to:

NULL
string(5) "hello"

See Also

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