(PHP 5 >= 5.3.6, PHP 7)
Removes all objects except for those contained in another storage from the current storage
public void SplObjectStorage::removeAllExcept ( SplObjectStorage $storage )
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.
Returns:
No value is returned.
Examples:
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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