php - 检查数组是否存在

Question

$array = Array
(
    [0] => Array
        (
            [id] => 46
            [title] => sometext
        )

    [1] => Array
        (
            [id] => 47
            [title] => sometext
        )
    [2] => Array
        (
            [id] => 48
            [title] => sometext
        )
    [3] => Array
        (
            [id] => 49
            [title] => sometext
        )
    [4] => Array
        (
            [id] => 50
            [title] => sometext
        )

)

我们有一个数组和一个变量:

$variable = 48; //some number

我们如何检查$variable是否存在于$array内的某些数组['id']中？

返回true或false。

Answer 1

function myCheck($array, $variable)
    foreach($array as $subArray) {
        if($subArray['id'] == $variable) {
            return true;
        }
    }
    return false;
}