Online PHP editor | output for QMgKU

@ 2014-01-29T17:30:41Z

<?php

$products = [1, 2, 3, 4, 5];
$vendors = ["Amazon", "Newegg", "Frys"];
$product_combinations = array();

function pc_permute($items, &$combinations, $perms = array()) {
    if (empty($items)) { 
        $combinations[] = $perms;
    }  else {
        for ($i = count($items) - 1; $i >= 0; --$i) {
             $newitems = $items;
             $newperms = $perms;
             list($foo) = array_splice($newitems, $i, 1);
             array_unshift($newperms, $foo);
             pc_permute($newitems, $combinations, $newperms);
         }
    }
}

// Build product combinations
pc_permute($products, $product_combinations);

// Build vendor combinations



var_dump($combinations);

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Warning: Undefined variable $combinations in /in/QMgKU on line 28 NULL
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.5 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33: Notice: Undefined variable: combinations in /in/QMgKU on line 28 NULL
Output for 7.3.32 - 7.3.33, 7.4.26: NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/QMgKU on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected '[' in /in/QMgKU on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/QMgKU on line 3
Process exited with code 255.

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