Online PHP editor | refs for kDsWv

<?php function isSuperSet($setA, $setB) { if (!is_array($setA) && !is_array($setB)) { return $setA == $setB; } if (!is_array($setA) || !is_array($setB)) { return false; } $keys = array_intersect_key($setA, $setB); if (count($keys) != count($setB)) { return false; } foreach ($keys as $k => $v) { if (!isSuperSet($setA[$k], $setB[$k])) { return false; } } return true; } /* * return true if setA has all capabilities in setB. Here the comparison is on actual capabilities, and nothing * fancy like number of capabilities or a weighted sum of capabilities. In other words, return true if setB is a * subset of setA. * * NOTE: This function does not validate if the inputs are really capability lists. * * @param array setA - master list to compare against * @param array setB - subset to be compared * * @return bool */ function hasAllCapabilities($setA, $setB) { if(!isset($setA)) $setA = array(); if(!is_array($setA)) $setA = array($setA); if(!isset($setB)) $setB = array(); if(!is_array($setB)) $setB = array($setB); foreach ($setB as $k=>$v) { if (array_key_exists($k, $setA)) { if (!isSuperSet($setA[$k], $v)) { return false; } } else { return false; } } return true; } $a=array(101=>array(1,2,3), 100=>array(2,3)); $b=array(101=>array(1)); echo hasAllCapabilities($a, $b);