摘要：'d', 1 => '68b3', 2 => 'a86', 3 => 'c9aa97b23b71d5c', 4 => '55169',);echo get_max_val($arr);function get_max_val($arr){ $key = null; foreach ($arr as $k=>$v) { if($key == null || strval($v) > strval($arr[$key])) { $key = $k; } } return $key;} 阅读全文