SplObjectStorage::attach
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplObjectStorage::attach — Adds an object in the storage
Description
public SplObjectStorage::attach(object $object, mixed $info = null): void
Adds an object inside the storage, and optionally associate it to some data.
Parameters
-
object
-
The object to add.
-
info
-
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"
See Also
- SplObjectStorage::detach() - Removes an object from the storage
- SplObjectStorage::offsetSet() - Associates data to an object in the storage
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https://www.php.net/manual/en/splobjectstorage.attach.php