The SplObjectStorage::unserialize() function is an inbuilt function in PHP which is used to unserialize the storage from its serialize string representation.
Syntax:
void SplObjectStorage::unserialize( $serilize )
Parameters: This function accepts a single parameter $serialize which specifies the string serialization of the storage.
Return Value: This function does not return any value.
Below programs illustrate the SplObjectStorage::unserialize() function in PHP:
Program 1:
<?php $obj1 = new StdClass;
// Create an empty SplObjectStorage $gfg1 = new SplObjectStorage();
$gfg1 [ $obj1 ] = "Geeks" ;
// Use unserialize() function $gfg1 ->unserialize( $gfg1 ->serialize());
print_r( $gfg1 );
?> |
Output:
SplObjectStorage Object ( [storage:SplObjectStorage:private] => Array ( [00000000494fcd4d000000001f544823] => Array ( [obj] => stdClass Object ( ) [inf] => Geeks ) [00000000494fcd4f000000001f544823] => Array ( [obj] => stdClass Object ( ) [inf] => Geeks ) ) )
Program 2:
<?php $obj1 = new StdClass;
$obj2 = new StdClass;
// Create an empty SplObjectStorage $gfg1 = new SplObjectStorage();
$gfg1 [ $obj1 ] = "Geeks" ;
// Create an empty SplObjectStorage $gfg2 = new SplObjectStorage();
$gfg2 [ $obj1 ] = "GFG" ;
$gfg2 [ $obj2 ] = "GeeksClasses" ;
// Use unserialize() function $gfg1 ->unserialize( $gfg2 ->serialize());
var_dump( count ( $gfg1 ));
// Use unserialize() function $gfg2 ->unserialize( $gfg1 ->serialize());
var_dump( count ( $gfg2 ));
?> |
Output:
int(3) int(5)
Reference: https://www.php.net/manual/en/splobjectstorage.unserialize.php