array problems.

i have a small application that gets me all possible combinations of 5 numbers from an array that holds 12 numbers. when i try to alter it and make the elements in the array more and try to get combinations of 7, 6 numbers it says :

Quote:

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Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 35 bytes)

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I have attached the php file. thanks for the replies

copy and paste the PHP file's code here. no need for a rar file. be sure to enclose it in [php] and [/php] tags, too.

here it is

PHP Code:

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<?php

$set = array('1', '2', '3', '4','5', '6', '7', '8', '9', '10', '11', '12', '13','14','15','16','33','53','','223','14', '21', '42', '24','53', '26', '37', '674', '349', '430');

$no = 6;


function test($array) {
    $results = array(array( ));

    foreach ($array as $element)
        foreach ($results as $combination)
            array_push($results, array_merge(array($element), $combination));

    return $results;
}

$power_set = test($set);

foreach (test($set) as $combination) {
    if ($no == count($combination)) {
        print join(" , ", $combination) . "<br>";
    }
}

?>

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Anyone can help on this???? I got this code from php cookbook. For up to 12 variables choosing 5 number combinatios it works. If I increase the elements and/ or the number combinations it throws this memory error on the line with the function : array_merge. I have tried to increase the memory and increased it as far as 128 mb with not luck. Anyone. Someone.. Thanks