Using shuffle in PHP

Posted by admin
May 8, 2008

shuffle – Shuffle an array

Description

void shuffle ( array array)

This function shuffles (randomizes the order of the elements in) an array. You must use srand() to seed this function.

Example 1. shuffle() example

<?php
$numbers = range(1, 20);
srand((float)microtime() * 1000000);
shuffle($numbers);
while (list(, $number) = each($numbers)) {
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.

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