PHP returns the corresponding key value according to the value in the two-dimensional array

Preface

When performing array operations, you sometimes need to find the corresponding key value according to the value in the array , Here's a way to share , You can quickly find the corresponding key value according to the value in the two-dimensional array .

    /** * Returns the for according to the value key  Key name  *@param $search[string]  Search value  *@param $array[array]  Array searched  *@return  Find return key name   No return found false */
    function deep_get_key($search, $arr)
    {
    
        $index = '';
        foreach ($arr as $value) {
    
            foreach ($value as $k => $v) {
    
                if ($v === $search) {
    
                    $index = $k;
                    break;
                }
            }
            if ($index) {
    
                break;
            }
        }
        if (empty($index)) {
    
            return false;
        } else {
    
            return $index;
        }
    }