note 51438 deleted from function.rand by felipe
| From: | felipe@php.net | Date: | Sun, 30 Dec 2007 18:42:45 +0000 |
| Subject: | note 51438 deleted from function.rand by felipe | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-134412@lists.php.net to get a copy of this message | ||
Note Submitter: hoffa at NOSPAM hoffa.se
----
To shuffle an array ( [0....n] )
function Shufflearr($array) {
$size = sizeof($array) - 1;
for ($x = 0; $x < $size; $x++) {
$i = rand($x, $size);
$tmp = $array[$x];
$array[$x] = $array[$i];
$array[$i] = $tmp;
}
return $array;
}
// create an array
for ($i=0; $i<10; $i++) {
$nbrarray[$i] = $i;
}
print_r($nbrarray); // before
$nbrarray = Shufflearr($nbrarray); // shuffle
print_r($nbrarray); // after