如何通过比较php中的值来搜索二维数组的键

Question

这是我的多维数组，我想通过给出阀门来访问索引，如果我要求ID为LIT-100，我希望id为[0] [1]

Array
(
    [0] => Array
        (
            [0] => Test-LT-100
            [1] => LIT-100
            [2] => LIT-101
            [3] => LIT-102
        )

    [1] => Array
        (
            [0] => Test-LT-101
            [1] => LIT-103
        )

    [2] => Array
        (
            [0] => Test-LIT-102
            [1] => LIT-104
            [2] => LIT-105
        )

    [4] => Array
        (
            [0] => Test-PIT-200
            [1] => PIT-200
            [2] => PIT-201
        )

    [5] => Array
        (
            [0] => Test-PI-201
            [1] => PI-203
            [2] => PI-204
        )

    [6] => Array
        (
            [0] => Test-TIT-300
            [1] => TIT-300
            [2] => TIT-301
        )

    [7] => Array
        (
            [0] => Test-CV-700
            [1] => CV-700
        )

    [8] => Array
        (
            [0] => Test-PCV-800
            [1] => PSV-800
        )

    [9] => Array
        (
            [0] => Test-TE-301
            [1] => TE-304
        )

)

Answer 1

您可以使用以下代码实现它：

$a = [
    ["Test-LT-100", "LIT-100", "LIT-101", "LIT-102"],
    ["Test-LT-101", "LIT-103"],
    ["Test-LIT-102", "LIT-104", "LIT-105"]
];
$var = "LIT-100"; //The variable value you're searching for

foreach ($a as $key => $array) {
    $res = array_search($var, $array);
    if ($res) {
        $key_1 = $key;
        $key_2 = $res;
        break; //When the searched variable is found, it exits the foreach loop
    }
}

echo $a[$key_1][$key_2]; //Proof of work: must print out the string you searched for; in this case: LIT-100.