PHP: array_rand() function
PHP: Pick one or more random entries out of an array
The array_rand() function is used to fetch one or more random entries from an array. It uses a pseudo-random number generator that is not suitable for cryptographic purposes.
Version:
(PHP 4 and above)
Syntax:
array_rand(array1, no_rand_keys)
Parameter:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| array1 | The input array. | Required | Array |
| no_rand_keys | No of entries to get. | Optional | Integer |
Return value:
A random key if the value of no_rand_keys = 1.
If the value of no_rand_keys is greater than 1 it returns an array.
Value Type: Mixed*.
*Mixed : Mixed indicates multiple (but not necessarily all) types.
Example:
<?php
$array1= array('Mathematics','Physics','Chemistry','Biology');
$rand_keys = array_rand($array1,2);
echo $array1[$rand_keys[0]] . "\n";
echo $array1[$rand_keys[1]] . "\n";
?>
Output:
Mathematics Chemistry
Note : Since array_rand() function selects random values every time you run it, your output may vary from the Pictorial as well the output is shown under Output of the example in this tutorial.
View the Example in the browser
Practice here online :
See also
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Next: array_reduce