SplObjectStorage::attach

(PHP 5 >= 5.1.0)

SplObjectStorage::attachAdds an object in the storage

Description

public void SplObjectStorage::attach ( object $object [, mixed $data = NULL ] )

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

Parameters

object

The object to add.

data

The data to associate with the object.

Return Values

No value is returned.

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"

Changelog

Version Description
5.3.0 Added the data parameter.

See Also

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User Contributed Notes 1 note

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rafal dot wrzeszcz at wrzasq dot pl
10 months ago
Better way (imho) is to call:

$storage->removeAll($storage);

Especially, that sometimes (had no time to investigate) removeAllExcept(new SplObjectStorage()) leaves some elements.
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