SplObjectStorage::removeAllExcept
(PHP 5 >= 5.3.6, PHP 7, PHP 8)
SplObjectStorage::removeAllExcept — Removes all objects except for those contained in another storage from the current storage
Description
public SplObjectStorage::removeAllExcept(SplObjectStorage $storage): int
Removes all objects except for those contained in another storage from the current storage.
Parameters
-
storage -
The storage containing the elements to retain in the current storage.
Return Values
Returns the number of remaining objects.
Examples
Example #1 SplObjectStorage::removeAllExcept() example
<?php $a = (object) 'a'; $b = (object) 'b'; $c = (object) 'c'; $foo = new SplObjectStorage; $foo->attach($a); $foo->attach($b); $bar = new SplObjectStorage; $bar->attach($b); $bar->attach($c); $foo->removeAllExcept($bar); var_dump($foo->contains($a)); var_dump($foo->contains($b)); ?>
The above example will output something similar to:
bool(false) bool(true)
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https://www.php.net/manual/en/splobjectstorage.removeallexcept.php
