通过该键的关联数组的值搜索多维数组的键

Question

Array
(
[Roofing] => Array
    (
        [0] => Roofing Contractors
        [1] => Commercial Roofing
        [2] => Contractor Metal Roofing
    )

我如何通过在PHP中搜索算法来通过“屋顶承包商”值获得“屋顶”

Answer 1

$search = 'Roofing';
foreach($array as $item) {
    if (strpos($item, $search) !== 0) {
        // entry found
    }
}

但是pregmatch可能有更快的方法