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PHP 对数据库操作。一次对多表安插

Jun 13, 2016 am 11:16 AM
id insert nbsp sql

PHP 对数据库操作。一次对多表插入

本帖最后由 xuzuning 于 2013-03-06 19:00:56 编辑
public function add($u_id, $name, $big_classes)<br />{<br />  if(!self::$object)<br />  {<br />    return 102;<br />  }<br />  $sql = 'insert classes (cl_big_classes, cl_name) value ('.$big_classes.', \''.$name.'\')';<br />  $this->sql->query($sql);<br />  if($this->sql->affected_rows <= 0)<br />  {<br />    return 220;<br />  }<br />  $last_id = $this->sql->insert_id;<br />  if($last_id)<br />  {<br />    $sql = 'insert u_cl_link (u_id, cl_id) value ('.$u_id.', '.$last_id.')';<br />    //这句很明显的不是上一句的操作结果,是最上一句的结果。 最后的结果是返回0,表示一切正常,但数据库最后只插入了第一条。第二条完全没有执行过,求解决方法<br />    if($this->sql->affected_rows <= 0) <br />    {<br />      return 222;<br />    }<br />    return 0;<br />  }<br />}
Copy after login


求解决方法,理论上说,是分别执行的两次query,第二句不会没有执行的啊。但第二句的插入操作没有成功,我把第二句$sql复制到命令行执行,可以成功插入,这里应该是有个啥机制我没理解的吧。求高人指点一二,
数据库 php insert sql query
------解决方案--------------------
但是并没有看到
$sql = 'insert u_cl_link (u_id, cl_id) value ('.$u_id.', '.$last_id.')';
的 $sql 在哪里被执行啊
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