The SplObjectStorage::serialize() function is an inbuilt function in PHP which is used to serialize the result of the storage.
Syntax:
string SplObjectStorage::serialize()
Parameters: This function does not accept any parameter.
Return Value: This function returns a string which is the representation of the storage.
Below programs illustrate the SplObjectStorage::serialize() function in PHP:
Program 1:
<?php   // Create new storage class $str = new SplObjectStorage; $obj = new StdClass;   $str->attach($obj, "neveropen");   // Print serialize result echo $str->serialize(); ?> |
Output:
x:i:1;O:8:"stdClass":0:{}, s:13:"neveropen";;m:a:0:{}
Program 2:
<?php   $obj1 = new StdClass; $obj2 = new StdClass;   // Create new storage class $gfg1 = new SplObjectStorage(); $gfg1[$obj1] = "Geeks";   // Create new storage class $gfg2 = new SplObjectStorage(); $gfg2[$obj1] = "GFG"; $gfg2[$obj2] = "GeeksClasses";   print_r( $gfg1->serialize(). "\n"); echo( $gfg2->serialize()."\n");   ?> |
Output:
x:i:1;O:8:"stdClass":0:{}, s:5:"Geeks";;m:a:0:{}
x:i:2;O:8:"stdClass":0:{}, s:3:"GFG";;O:8:"stdClass":0:{}, s:12:"GeeksClasses";;m:a:0:{}
Reference: https://www.php.net/manual/en/splobjectstorage.serialize.php
