我有3个表:控制器,allot_compnts和prev_allot_compnts,3代表具有相同的字段,当我点击提交按钮,在allot_compnts值复制到prev_allot_compnts和allot_compnts删除如何在MySQL中添加两个表中的两列?
代码:
[email protected]$_POST['submit']
$type = isset($_POST['comp_type'])? $_POST['comp_type'] : '';
$name = isset($_POST['comp_name'])? $_POST['comp_name'] :'';
$comp = isset($_POST['num_comp'])? $_POST['num_comp'] :'';
//Insert
$sql1="INSERT INTO prev_alloted_comp(id,comp_type,comp_name,num_comp)
SELECT comp_type,comp_name,num_comp FROM alloted_comp WHERE id='$id'" ;
//Delete
$sql2="delete from alloted_comp where id='$id'";
//Here i'm trying to update controller table
if($type === 'Controller'){
$sql3= "UPDATE comp_controller SET
num_comp=(num_comp+$_POST[num_comp]) WHERE comp_name ='$name'
ON DUPLICATE KEY UPDATE num_comp=num_comp+'$_POST[num_comp]'";
}
我试图更新基于$ _ POST [num_comp]在控制器表num_comp,但在控制表中的值不更新
我是新来这个,请任何一个可以帮助我如何做到这一点
更新:我刚刚更新了我的代码
[email protected]$_POST['submit']
$type = isset($_POST['comp_type']);
$name = isset($_POST['comp_name']);
$comp = isset($_POST['num_comp']);
//Insert
$sql1="INSERT INTO prev_alloted_comp(id,comp_type,comp_name,num_comp)
SELECT comp_type,comp_name,num_comp FROM alloted_comp WHERE id='$id'" ;
//Delete
$sql2="delete from alloted_comp where id='$id'";
//Here i'm trying to update controller table
if($type === 'Controller'){
$sql3= "UPDATE comp_controller SET
num_comp=(num_comp+$_POST[num_comp]) WHERE comp_name ='$name'";
}
西尔不工作
无效的语法'(num_comp + $ _ POST [num_comp])',正确地转义字符串,变量 – Thamilan
@Thamilan实际上被解析并被'$ _POST'中的相应值替换。虽然它仍然是对sql注入课程的公开邀请。 (用一堆E_NOTICE来使用未定义的常量,但php在这一点上认为它是一个字符串) – ccKep
@Thamilan,谢谢你的评论,我只是想添加帖子值,是否有任何修改'(num_comp + $ _POST [num_comp])' – kiran