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run code in 300+ PHP versions simultaneously

@ 2015-03-16T13:01:20Z

<?php

    function createAttributeCollections($pricingAttributes = null, $permutation = array()){
        //permutation result
        if (empty($pricingAttributes)) {
            echo implode(',', $permutation );
        //permutation
        }  else {
            //permutation loop
            for ($i = count($pricingAttributes) - 1; $i >= 0; --$i) {
                $newpricingAttributes = $pricingAttributes;
                $newPermutations = $permutation;
                list($foo) = array_splice($newpricingAttributes, $i, 1);
                array_unshift($newPermutations, $foo);
                createAttributeCollections($newpricingAttributes, $newPermutations);
            }
        }
    }
    
    
    $results = createAttributeCollections(array('A','B','G','U'));

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: A,B,G,UB,A,G,UA,G,B,UG,A,B,UB,G,A,UG,B,A,UA,B,U,GB,A,U,GA,U,B,GU,A,B,GB,U,A,GU,B,A,GA,G,U,BG,A,U,BA,U,G,BU,A,G,BG,U,A,BU,G,A,BB,G,U,AG,B,U,AB,U,G,AU,B,G,AG,U,B,AU,G,B,A

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