PHP shuffle() Function
Example
Reorder the elements of the array in random order:
<?php
$my_array = array("red","green","blue","yellow","purple");
shuffle($my_array);;
print_r($my_array);
?>
Definition and Usage
The shuffle() function reorders the elements of the array in random order.
This function assigns new key names to the elements of the array. Existing key names will be deleted (see the example below 1).
Syntax
shuffle(array)
| Parameter | Description |
|---|---|
| array | Required. Specifies the array to be used. |
Technical Details
| Return Value: | Returns TRUE if successful, FALSE if failed. |
| PHP Version: | 4+ |
| Update Log: |
The random number generator will be automatically seeded starting from PHP 4.2.0. Note: This function assigns new key names to the elements of the array. This will delete the original key names and not just reorder them. Note: Starting from PHP 4.2.0, srand() or mt_srand() function is no longer required to seed the random number generator, which is now automatically completed. |
More Examples
Example 1
Reorder the elements of 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);
?>
