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Shuffle an array (PHP 4, PHP 5)
bool shuffle ( array &array )

This function shuffles (randomizes the order of the elements in) an array.


This function assigns new keys for the elements in array. It will remove any existing keys you may have assigned, rather than just reordering the keys.

Example 322. shuffle() example

= range(1, 20);
srand((float)microtime() * 1000000);
foreach (
$numbers as $number) {
"$number ";


As of PHP 4.2.0, there is no need to seed the random number generator with srand() or mt_srand() as this is now done automatically.

See also arsort(), asort(), ksort(), rsort(), sort(), and usort().