使用php从数组数组中查找最短距离

Question

我想比较从数组 [0] 到数组末尾的距离，并用它的键显示最短距离。

数组 ( [0] => 数组 ( [城市] => 数组 ( [0] => 减少 [1] => 仙人掌 )

        [distance] => 14.4
    )

[1] => Array
    (
        [city] => Array
            (
                [0] => Array
                    (
                        [0] => Reduit
                        [1] => Ebe
                    )

                [1] => Bees Village
                [2] => Phoen Trunk Rd
                [3] => Riv,Phoenix
                [4] => St l Rd
                [5] => Geoes Guibert St
                [6] => Curepipe
            )

        [distance] => 1.4
    )

[2] => Array
    (
        [city] => Array
            (
                [0] => Array
                    (
                        [0] => Reduit
                        [1] => Riv,Phoenix
                    )

                [1] => St l Rd
                [2] => Geoes Guibert St
                [3] => Curepipe
            )

        [distance] => 3.4
    )

[3] => Array
    (
        [city] => Array
            (
                [0] => Array
                    (
                        [0] => Reduit
                        [1] => Ebene
                    )

                [1] => Belles Village
                [2] => Phoenix Trunk Rd
                [3] => Riverside,Phoenix
                [4] => St Paul Rd
                [5] => Georges Guibert St
                [6] => Curepipe
            )

        [distance] => 22.4
    )

)

我用过，

$total = count($array)-1; $current = $array[0]['距离'];

for($loop=1;$loop<$total;$loop++){

    $next = $array[$loop]['distance'];
    $current = $next;
    $current = $current;

    if ($next>$current){

        print_r($current);

        }
    }


}

要获取所有键的索引，请获取第一个索引并使用交换将其与其他值进行比较.. 但它不起作用。有人有修复请。谢谢你

Answer 1

如果我理解正确，你不应该设置 $current = $next 除非它在 ​​if 语句中，而且你似乎还有一个额外的 } 在那里。我也相信您想在 if 语句中将 > 更改为

试试这个：

for($loop=1;$loop<$total;$loop++){

    $next = $array[$loop]['distance'];

    if ($next<$current){
        $current = $next;
        print_r($current);

    }
}

希望对你有所帮助！