几个数组的排序方法

Posted 2020-10-03

1.对数组进行某一键值的排序

function array_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.根据数组字符串长度冒泡排序

//数组冒泡排序
function bubble_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.根据数组里面的两个key来进行冒泡排序

//数组冒泡排序
function bubble_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;
}