<?phprequire (‘../dao/medoo.php‘);function logI($tag, $message) {    input("i", $tag, $message);}function logE($tag, $message) {    input("e", $tag, $message);}function logW($tag, $message) {    input("w", $tag, $message);}function logD($tag, $message) {    input("d", $tag, $message);}function input($type, $tag, $message) {    $db = new medoo(null);    $db->insert("en_log", array (    "l_id" => uuid(), "l_type" => $type, "l_tag" => $tag, "l_msg" => $message));}/** * 生成UUID */function uuid($prefix = ‘‘){    $chars = md5(uniqid(mt_rand(), true));    $uuid  = substr($chars,0,8) . ‘-‘;    $uuid .= substr($chars,8,4) . ‘-‘;    $uuid .= substr($chars,12,4) . ‘-‘;    $uuid .= substr($chars,16,4) . ‘-‘;    $uuid .= substr($chars,20,12);    return $prefix . $uuid;}?>

CREATE TABLE `en_log` (  `l_id` char(36) NOT NULL,  `l_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,  `l_type` enum(‘i‘,‘d‘,‘w‘,‘e‘) NOT NULL,  `l_tag` char(50) NOT NULL,  `l_msg` text NOT NULL,  PRIMARY KEY (`l_id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;