大连公司网站建设,淮北招聘网,互联网网站开发合同,国外网站 图片下面为大家带来一篇PHP面向对象之事务脚本模式(详解)。内容挺不错的#xff0c;现在就分享给大家#xff0c;也给大家做个参考。如下所示#xff1a;/*事务脚本模式: 类似于thinkphp中的model层#xff0c;或者说就是操作数据库的类。个人觉得实践中使用起来还是挺简单方便…下面为大家带来一篇PHP面向对象之事务脚本模式(详解)。内容挺不错的现在就分享给大家也给大家做个参考。如下所示/*事务脚本模式: 类似于thinkphp中的model层或者说就是操作数据库的类。个人觉得实践中使用起来还是挺简单方便的就是SQL语句写死了的话灵活性就不够。示例代码如下*/namespace woo\process;abstract class Base{static $DB; //pdo对象static $stmts array(); //sql语句句柄function __construct (){$dsn \woo\base\ApplicationRegistry::getDSN();if(is_null($dsn)){throw new \woo\base\AppException(No DSN);}self::$DB new PDO($dsn);self::$DB-setAttribute(\PDO::ATTR_ERRMODE,\PDO::ERRMODE_EXCEPTION);}function prepareStatement($stmt_s){ //缓存sql语句句柄if(isset(self::$stmts($stmt_s)){return self::$stmts[$stmt_s];}$stmt_handle self::$DB-prepare($stmt_s);self::$stmts[$stmt_s] $stmt_handle;return $stmt_handle;}protected function doStatement($stmt_s,$values_a){ //执行sql并获取一个语句资源$sth $this-prepareStatement($stmt_s);$sth-closeCursor();$db_result $sth-execute($values_a);return $sth;}}//这个类就是向数据库中写入一些数据比较简单没什么好多说的class VenueManager extends Base{static $add_venue INSERT INTO venue (name) values(?);static $add_space INSERT INTO space (name,venue) values(?,?);static $check_slot SELECT id,name FROM event WHERE space ? AND (startduration)? AND start ;static $add_event INSERT INTO event (name,space,start,duration) values(?,?,?,?);function addVenue($name,$space_array){$ret array();$ret[venue] array($name);$this-doStatement(self::$add_venue,$ret[venue]);$v_id self::$DB-lastInsertId();$ret[spaces] array();foreach($space_array as $space_name){$values array($space_name,$v_id);$this-doStatement(self::$add_space,$values);$s_id self::$DB-lastInsertId();array_unshift($values,$s_id);$ret[spaces][] $values;}return $ret;}function bookEvent ($space_id,$name,$time,$duration){$values array($space_id,$time,($time$duration));$stmt $this-doStatement(self::$check_slot,$values,false);if($result $stmt-fetch()){throw new \woo\base\AppException(double booked! try again);}$this-doStatement(self::$add_event,array($name,$space_id,$time,$duration));}}//客户端,使用起来还是比较简便的$venue new VenueManager();$venue-addVenue(test,array(test1,test2,test3));以上就是本文的全部内容希望对大家的学习有所帮助更多相关内容请关注PHP中文网相关推荐
