How to use php shuffle function

php shuffle function is used to rearrange the elements in the array in random order. The syntax is shuffle(array), and the parameter array is required and refers to the array to be used.

#How to use the php shuffle function?

Definition and usage

shuffle() function rearranges the elements in the array in random order.

This function assigns new key names to elements in the array, and existing key names will be deleted (see Example 1 below).

Syntax

shuffle(array)

Parameters

array Required. Specifies the array to use.

Return value: TRUE if successful, FALSE if failed.

PHP Version: 4

Change Log: As of PHP 4.2.0, the random number generator is automatically seeded.

Example 1

Rearrange the elements in the array in random order:

<?php
$my_array = array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow","e"=>"purple");
shuffle($my_array);
print_r($my_array);
?>

Output:

Array ( [0] => red [1] => blue [2] => green [3] => purple [4] => yellow )

Example 2

Rearrange the elements in the array in random order:

<?php
$my_array = array("red","green","blue","yellow","purple");
shuffle($my_array);
print_r($my_array);
?>

Output:

Array ( [0] => blue [1] => green [2] => yellow [3] => red [4] => purple )

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