PHP shuffle () function
Examples
The elements in the array are rearranged in random order:
<?php
$my_array = array("red","green","blue","yellow","purple");
shuffle($my_array);
print_r($my_array);
?>
$my_array = array("red","green","blue","yellow","purple");
shuffle($my_array);
print_r($my_array);
?>
Running instance »
Definition and Usage
shuffle () function to rearrange the elements of the array in random order.
This function allocates a new name for the key elements in the array, existing keys will be deleted (see Example 1 below).
grammar
shuffle( array )
| 参数 | 描述 |
|---|---|
| array | 必需。规定要使用的数组。 |
technical details
| return value: | If successful it returns TRUE, on failure returns FALSE. |
|---|---|
| PHP version: | 4+ |
| Update log: | As of PHP 4.2.0, the random number generator is automatically seeded. |
More examples
Example 1
The elements in the array are rearranged in random order:
<?php
$my_array = array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow","e"=>"purple");
shuffle($my_array);
print_r($my_array);
?>
$my_array = array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow","e"=>"purple");
shuffle($my_array);
print_r($my_array);
?>
Running instance »
Complete PHP Array Reference