PHP | ArrayObject serialize() Function

The ArrayObject::serialize() function is an inbuilt function in PHP which is used to serialize the ArrayObject.

Syntax:

string ArrayObject::serialize( void )

Parameters: This function does not accept any parameters.

Return Value: This function returns the serialized representation of the ArrayObject.

Below program illustrates the ArrayObject::serialize() function in PHP:

Program:

<?php
// PHP program to illustrate the
// ArrayObject::serialize() function

// Declare an associative array
$arr = array(
    "a" => "Welcome",
    "b" => "to",
    "c" => "GeeksforGeeks"
);

// Create array object
$arrObject = new ArrayObject($arr);

// Use ArrayObject::serialize() function
// to get the behavior of flags
$serialize1 = serialize($arrObject);
$serialize2 = $arrObject->serialize();

// Display the result
var_dump($serialize1);
var_dump($serialize2);

?>

Output:

string(113) "C:11:"ArrayObject":89:{
    x:i:0;a:3:{
        s:1:"a";s:7:"Welcome";
        s:1:"b";s:2:"to";
        s:1:"c";s:13:"GeeksforGeeks";
    }
    ;m:a:0:{}
}"
string(89) "x:i:0;a:3 {
    s:1:"a";s:7:"Welcome";
    s:1:"b";s:2:"to";
    s:1:"c";s:13:"GeeksforGeeks";
};m:a:0:{}"

Reference: https://www.php.net/manual/en/arrayobject.serialize.php