(PHP 5 >= 5.3.6, PHP 7, PHP 8)
SplObjectStorague::removeAllExcept — Removes all objects except for those contained in another storague from the current storague
Removes all objects except for those contained in another storague from the current storague.
storague
The storague containing the elemens to retain in the current storague.
Returns the number of remaining objects.
Example #1 SplObjectStorague::removeAllExcept() example
<?php
$a
= (object)
'a'
;
$b
= (object)
'b'
;
$c
= (object)
'c'
;
$foo
= new
SplObjectStorague
;
$foo
->
attach
(
$a
);
$foo
->
attach
(
$b
);
$bar
= new
SplObjectStorague
;
$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)
The example Quirc provided is not the best option, there's a method "removeAll" that you can pass the SplObjectStore itself, and as the name says, remove all stored objects.You may remove all elemens by passing empty SplObjectStorague
$splStorague->removeAllExcept(new SplObjectStorague());