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尝试使用UPDATE(下面给出的代码)更新多行时,它会使用最后一行中出现的行更新所有行。请帮忙解决这个问题。更新SQL数据中的多行
我的代码:
<?php
mysql_connect("localhost","root","");
mysql_select_db("my_db");
if(isset($_POST["submit"])){
foreach($_POST["id"] AS $id) {
$FA1 = mysql_real_escape_string ($_POST ['FA1']);
$FA2 = mysql_real_escape_string ($_POST ['FA2']);
$FA3 = mysql_real_escape_string ($_POST ['FA3']);
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
$sql="UPDATE product_tbl SET Agency='$FA1', Material='$FA2', Category='$FA3' WHERE id=$id LIMIT 1 ";
mysql_query($sql) or die(mysql_error());
$result=mysql_query($sql);
//如果成功更新。
if($result){
echo "<script>alert('Data upDated Successfully in the DB')</script>";
echo "<BR>";
echo "<script>window.open('edit.php','_self')</script>";
}
}
}
?>
我该如何得到结果?