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PHP SplObjectStorage detach() Function

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The SplObjectStorage::detach() function is an inbuilt function in PHP which is used to remove objects from the storage. Syntax:
void SplObjectStorage::detach($obj)
Parameters: This function accepts a single parameter $obj which specifies the object to be remove from the storage. Return Value: This function does not return any value. Below programs illustrate the SplObjectStorage::detach() function in PHP: Program 1:
<?php
  
// Creating class 
$obj = new StdClass;
  
// Create an empty storage class
$str = new SplObjectStorage();
  
// Add some object
$str->attach($obj, "GeeksforGeeks");
  
// Print result before detaching 
var_dump(count($str));
  
// Detaching object
$str->detach($obj);
  
// Print result after detach
var_dump(count($str));
?>

                    
Output:
int(1)
int(0)
Program 2:
<?php
  
// Creating class 
$obj1 = new StdClass;
$obj2 = new StdClass;
$obj3 = new StdClass;
  
// Create an empty storage class
$str = new SplObjectStorage();
  
// Add some object
$str->attach($obj1, "GeeksforGeeks");
$str->attach($obj2);
$str->attach($obj3, "GFG");
  
// Print result before detaching 
var_dump(count($str));
  
// Detaching object
$str->detach($obj1);
  
// Print result after detach first object
var_dump(count($str));
  
// Detaching object
$str->detach($obj3);
  
// Print result after detach second object
var_dump(count($str));
?>

                    
Output:
int(3)
int(2)
int(1)
Reference: https://www.php.net/manual/en/splobjectstorage.detach.php

Last Updated : 23 Jun, 2023
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