The SplObjectStorage::offsetExists() function is an inbuilt function in PHP which is used to check the object exist in storage or not.
Syntax:
bool SplObjectStorage::offsetExists($object)
Parameters: This function accepts a single parameter $object which specifies the object to be checked.
Return Value: This function returns true if the object exists in storage otherwise return false.
Below programs illustrate the SplObjectStorage::offsetExists() function in PHP:
Program 1:
php
<?php // Create an empty SplObjectStorage $str = new SplObjectStorage;
$obj = new StdClass;
// Attach $obj to $str $str ->attach( $obj );
// Print Result var_dump( $str ->offsetExists( $obj ));
?> |
Output:
bool(true)
Program 2:
php
<?php // Create an Empty SplObjectStorage $str = new SplObjectStorage();
$obj1 = new StdClass;
$obj2 = new StdClass;
$obj3 = new StdClass;
$obj4 = new StdClass;
// Attach only three objects $str ->attach( $obj1 , "GeksforGeeks" );
$str ->attach( $obj2 , "GFG" );
$str ->attach( $obj3 );
// Print result var_dump( $str ->offsetExists( $obj1 ));
var_dump( $str ->offsetExists( $obj2 ));
var_dump( $str ->offsetExists( $obj4 ));
var_dump( $str ->offsetExists( $obj3 ));
?> |
Output:
bool(true) bool(true) bool(false) bool(true)
Reference: https://www.php.net/manual/en/splobjectstorage.offsetexists.php