How to sort several arrays

1. Sorting a key value for an array

functionArray_sort ($arr,$keys,$type= ' ASC '){    if(Empty($arr))        return $arr; $keysvale=$newq _array=Array(); foreach($arr  as $k=$v){        $keysvale[$k] =$v[$keys]; }    if($type= = ' ASC '){        Asort($keysvale); }Else{        Arsort($keysvale); }    Reset($keysvale); foreach($keysvale  as $k=$v){        $newq _array[$k] =$arr[$k]; }    return $newq _array;}

2. Bubble sort based on array string length

//Array Bubble SortfunctionBubble_sort_by_length ($array){    $count=Count($array); if($count<= 0){        return $array; }     for($i= 0;$i<$count;$i++){         for($k=$count-1;$k>$i;$k--){            if(strlen($array[$k]) >strlen($array[$k-1])){                $tmp=$array[$k]; $array[$k] =$array[$k-1]; $array[$k-1] =$tmp; }        }    }    return $array;}

3. Bubble sort based on two keys inside the array

//Array Bubble SortfunctionBubble_sort_by_key ($array,$key,$key _2,$type= ' ASC ',$type _2= ' ASC '){    $count=Count($array); if($count<= 0 | |Empty($array)){        return Array(); }    if($type= = ' ASC ') {         for($i= 0;$i<$count;$i++) {             for($k=$count-1;$k>$i;$k--) {                if($array[$k][$key] <$array[$k-1][$key]) {                    $tmp=$array[$k]; $array[$k] =$array[$k-1]; $array[$k-1] =$tmp; }                if($array[$k][$key] ==$array[$k-1][$key]) {                    if($type _2= = ' ASC ') {                        if($array[$k][$key _2] <$array[$k-1][$key _2]) {                            $tmp=$array[$k]; $array[$k] =$array[$k-1]; $array[$k-1] =$tmp; }                    }Else{                        if($array[$k][$key _2] >$array[$k-1][$key _2]) {                            $tmp=$array[$k]; $array[$k] =$array[$k-1]; $array[$k-1] =$tmp; }                    }                }            }        }    }Else{         for($i= 0;$i<$count;$i++) {             for($k=$count-1;$k>$i;$k--) {                if($array[$k][$key] >$array[$k-1][$key]) {                    $tmp=$array[$k]; $array[$k] =$array[$k-1]; $array[$k-1] =$tmp; }                if($array[$k][$key] ==$array[$k-1][$key]) {                    if($type _2= = ' ASC ') {                        if($array[$k][$key _2] <$array[$k-1][$key _2]) {                            $tmp=$array[$k]; $array[$k] =$array[$k-1]; $array[$k-1] =$tmp; }                    }Else{                        if($array[$k][$key _2] >$array[$k-1][$key _2]) {                            $tmp=$array[$k]; $array[$k] =$array[$k-1]; $array[$k-1] =$tmp; }                    }                }            }        }    }    return $array;}

How to sort several arrays