note 73731 deleted from function.rand by felipe

Note Submitter: kurtubba at gmail dot com 

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#correction of my last post, wrong operator on ($keys < count($returnme)-1) , additional reset arg added for frequent use
Trying to pick up random keys from an array but don't want any duplicates?
try this
<?php
//returns an array of random keys between 2 numbers
function &UniqueRands($min, $max, $keys, $reset=true){
	static $returnme = array();
	if($reset) $returnme = array();
	//while is used to avoid recursive the whole function
	while(in_array($x = rand($min,$max),$returnme));
	$returnme[] = $x;
	//$keys are the number of random integers in the array
	//must not be more than the sub of max - min
	if($keys > count($returnme) && count($returnme) < ($max-$min))
	   UniqueRands($min, $max, $keys,false);
	return $returnme;
}
//usage
$rands = & UniqueRands(0, 100, 30); 
print_r($rands);
//with an array
$vararry = array('red', 'blue', 'green', 'yellow','black');
$rands = & UniqueRands(0, count($vararry)-1, 3);
foreach($rands as $x)
	echo "$vararry[$x],";
?>