SplObjectStorage::removeAllExcept
PHP function
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(PHP 5 >= 5.3.6, PHP 7, PHP 8)
Removes all objects except for those contained in another storage from the current storage
Description
SplObjectStorage::removeAllExcept(SplObjectStorage $storage): int
Removes all objects except for those contained in another storage from the current storage.
Parameters
storageThe storage containing the elements to retain in the current storage.
Return Values
Returns the number of remaining objects.
Examples
SplObjectStorage::removeAllExcept() example
php
<?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:
output
bool(false)
bool(true)