PHP ArrayObject setFlags() Function

The ArrayObject::setFlags() function is an inbuilt function in PHP that is used to set the flag to change the behavior of the ArrayObject. 

Syntax:

void ArrayObject::setFlags( int $flags )

Parameters: This function accepts single parameter $flags which hold the behavior of new ArrayObject. This parameter holds either a bitmask or named constants. 

Return Value: This function does not return any value. 

Below examples illustrate the ArrayObject::setFlags() function in PHP: 

Example 1:

php

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

// Declare an array and convert
// it into array object
$arrObject = new ArrayObject(
    array('Geeks', 'for', 'Geeks')
);

// Use ArrayObject::getFlags() function
// to get the behavior of flags
$flag = $arrObject->getFlags();

var_dump($flag);

// Set a new flags
$arrObject->setFlags(ArrayObject::ARRAY_AS_PROPS);

// Use ArrayObject::getFlags() function
// to get the behavior of flags
$flag = $arrObject->getFlags();

var_dump($flag);

?>

Output:

int(0)
int(2)

Example 2:

php

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

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

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

// Use ArrayObject::getFlags() function
// to get the behavior of flags
$flag = $arrObject->getFlags();

var_dump($flag);

// Set a new flags
$arrObject->setFlags(ArrayObject::STD_PROP_LIST);

// Use ArrayObject::getFlags() function
// to get the behavior of flags
$flag = $arrObject->getFlags();

var_dump($flag);

?>

Output:

int(0)
int(1)

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