include和require的区别// include// 相对路径include 'inc/hello.php';// 绝对路径include __DIR__ . '/inc/hello.php';echo $username;// requir...
handle.phpnamespace _0822;use PDO;session_start();$db = new PDO('mysql:dbname=phpedu','root','root');$stmt = $db->prepare('SE...
数据库高级查询1. where条件$set = Db::table('mhh_user')->where('uid','>=',2)->select();print_r($set); 2. 模糊查询 LIKE$set = Db::table('mhh...
composer常用指令// 查询版本信息composer -v// 注册并生效composer dumpautoload// 交互式创建配置文件`composer.json`composer init// 安装包composer install//...
类的扩展// __get()class user{ private array $data =[ 'age' => 18, ]; public function __get($name) { ...
