note 86559 modified in function.array-pop by danbrown

I wrote a simple function to perform an intersect on multiple (unlimited) arrays. Pass an array containing all the arrays you want to compare, along with what key to match by. <?php function multipleArrayIntersect($arrayOfArrays, $matchKey) { $compareArray = array_pop($arrayOfArrays); foreach($compareArray AS $key => $valueArray){ foreach($arrayOfArrays AS $subArray => $contents){ if (!in_array($compareArray[$key][$matchKey], $contents)){ unset($compareArray[$key]); } } } return $compareArray; } ?> --was-- I wrote a simple function to perform an intersect on multiple (unlimited) arrays. Pass an array containing all the arrays you want to compare, along with what key to match by. function multipleArrayIntersect($arrayOfArrays, $matchKey) { $compareArray = array_pop($arrayOfArrays); foreach($compareArray AS $key => $valueArray){ foreach($arrayOfArrays AS $subArray => $contents){ if (!in_array($compareArray[$key][$matchKey], $contents)){ unset($compareArray[$key]); } } } return $compareArray; } http://php.net/manual/en/function.array-pop.php