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PHP SplObjectStorage offsetExists() Function

Last Updated : 23 Jun, 2023
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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


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PHP SplObjectStorage offsetSet() Function

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