PHP | ArrayObject serialize() Function

Last Updated : 27 Sep, 2019
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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 
// 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

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