PHP 批量删除数据的方法分析

 代码如下

大家可以参考下面的这篇文章//www.jb51.net/article/6488.htm
SQL:$SQL=”delete from `doing` where id in (‘1,2,3,4’)”;
  数据用逗号隔开。
  表单:

  <form action=”?action=doing” method=”post”>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”1″/>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”2″/>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”3″/>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”4″/>
  <input type=”submit”/>
  </form>

复制代码 代码如下:

php处理文件

  <form action=”?action=doing” method=”post”>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”1″/>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”2″/>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”3″/>
  <input name=”ID_Dele[]” type=”checkbox” id=”ID_Dele[]”
value=”4″/>
  <input type=”submit”/>
  </form>

 

  好$ID_Dele=$_POST[‘ID_Dele’]将会是一个数组,虽然说PHP是弱类型的,但这里可没ASP弱。
  ASP可以直接:
  SQL=”delete from [doing] where id in
(‘”&ID_Dele&”‘)”进行删除。但PHP不能把$ID_Dele直接放进去。因为$ID_Dele可不是’1,2,3,4’哦,因为$ID_Dele是一个数组,具有键和值。
  好,PHP中也不难,刚好有个函数:implode(),对了。同split()explode()功能刚好相反的一个函数,后两者是用某字符(比如逗号)分割的,而前者则可以拼接为字符串。
  因此:

 代码如下

复制代码 代码如下:

  $ID_Dele= implode(“,”,$_POST[‘ID_Dele’]);
  $SQL=”delete from `doing` where id in ($ID_Dele)”;

  $ID_Dele= implode(“,”,$_POST[‘ID_Dele’]);
  $SQL=”delete from `doing` where id in ($ID_Dele)”;

相关文章