PHP shuffle() function

The PHP shuffle( ) function is used to randomize the order of the elements in the array. The function assigns new keys to the elements in an array. This function introduced in PHP 4.0.

Syntax

Parameter

Parameter	Description	Is compulsory
array	Specifies the array to use.	compulsory

Returns

The shuffle( ) function returns true on success or false on failure.

Example 1

<?php
$subject=array("a"=>"java","b"=>"dbms","c"=>"os","d"=>"compiler","e"=>"networking?);
shuffle($subject);
print_r($subject);
?>

Output- Every time output is random

Array
(
    [0] => networking
    [1] =>dbms
    [2] =>os
    [3] => compiler
    [4] => java
)

Example 2

<?php
$city = array(1 => "hyderabad", 2 => "bangalore", 3 => "kolkata");
shuffle($city);
print_r($city);
?>

Output- Every time output is random

(
    [0] =>bangalore
    [1] =>hyderabad
    [2] =>kolkata
)

Example 3

<?php
$fruit = array("d"=>"mango", "a"=>"apple", "b"=>"banana" );
shuffle($fruit);
print_r($fruit);
?>

Output- Every time output is random

Array
(
    [0] => apple
    [1] => banana
    [2] => mango
)

Example 4

<?php
$numbers = range(1, 5);
shuffle($numbers);
print_r($numbers);
?>

Output- Every time output is random

Array
(
    [0] => 4
    [1] => 5
    [2] => 3
    [3] => 2
    [4] => 1
)

Next TopicPHP Array Functions

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