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shuffle
Shuffle an array
(PHP 4, PHP 5)
bool shuffle ( array &array )
This function shuffles (randomizes the order of the elements in) an array.
Note:
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
<?php
$numbers = range(1, 20);
srand((float)microtime() * 1000000);
shuffle($numbers);
foreach ($numbers as $number) {
echo "$number ";
}
?>
Note:
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().