PHP | SplObjectStorage removeAll() Function
The SplObjectStorage::removeAll() function is an inbuilt function in PHP which is used to remove all objects contained in another storage from the current storage.
Syntax:
void SplObjectStorage::removeAll( $obj )
Parameters: This function accepts a single parameter $obj which specify the storage to be removed from the current storage.
Return Value: This function does not return any value.
Below programs illustrate the SplObjectStorage::removeAll() function in PHP:
Program 1:
<?php $obj1 = new StdClass; $obj2 = new StdClass; $gfg1 = new SplObjectStorage(); $gfg1 [ $obj1 ] = "Geeks" ; $gfg2 = new SplObjectStorage(); $gfg2 [ $obj1 ] = "GFG" ; $gfg2 [ $obj2 ] = "GeeksClasses" ; // Count and print all existing objects var_dump( count ( $gfg2 )); // Remove all objects of $gfg1 from $gfg2 $gfg2 ->removeAll( $gfg1 ); // Print result after removeAll var_dump( count ( $gfg2 )); ?> |
Output:
int(2) int(1)
Program 2:
<?php $obj1 = new StdClass; $obj2 = new StdClass; $gfg1 = new SplObjectStorage(); $gfg1 [ $obj1 ] = "Geeks" ; $gfg2 = new SplObjectStorage(); $gfg2 [ $obj1 ] = "GFG" ; $gfg2 [ $obj2 ] = "GeeksClasses" ; // Count and print all existing objects var_dump( count ( $gfg2 )); // Remove all objects of $gfg1 from $gfg2 $gfg2 ->removeAll( $gfg1 ); // Print result after removeAll var_dump( count ( $gfg2 )); // Remove all objects itself $gfg2 $gfg2 ->removeAll( $gfg2 ); // Print result after removeAll var_dump( count ( $gfg2 )); ?> |
Output:
int(2) int(1) int(0)
Reference: https://www.php.net/manual/en/splobjectstorage.removeall.php
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