private function _mergeAssocArray(&$a1, $a2)
    {
        foreach ($a2 as $k => $v) {
            if ($v === false) {
                if (isset($a1[$k])) {
                    unset($a1[$k]);
                }
                continue;
            }
            $a1[$k] = $v;
        }
    }
private function _mergeAssocArray(&$a1, $a2)
    {
        foreach ($a2 as $k => $v) {
            if ($v === false) {
                if (isset($a1[$k])) {
                    unset($a1[$k]);
                }
                continue;
            }
            $a1[$k] = $v;
        }
    }
private function _mergeAssocArray ( & $ a1 , $ a2 ) { foreach ( $ a2 as $ k => $ v ) { if ( $ v === false ) { if ( isset ( $ a1 [ $ k ] ) ) { unset ( $ a1 [ $ k ] ) ; } continue ; } $ a1 [ $ k ] = $ v ; } }
Merges one array into another, removes values which equal false
@param $a1 Array by reference that is merged into
@param $a2 Array that merges into $a1
Merges one array into another removes values which equal false