这段代码一直有错误。麻烦高手帮我看下。已经研究了一下午了。谢谢


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<?php

/*

* To change the template for this generated file go to

* Window - Preferences - PHPeclipse - PHP - Code Templates

*/

require("conn.php");

$user=$_POST['user'];

$title=$_POST['title'];

$content=$_POST['content'];

$sql_luck="insert into sny (id,user,title,content,lastDate)value('','$user','$title','$content',now())";

$sql="SELECT user FROM sny WHERE user='$user'";

$query =mysql_query($sql);

$rows=mysql_fetch_array($query);

if((!empty($_POST['sub']))and($rows['user']==$user)){

//echo $content;

echo "<script>alert('用户已存在，请重新输入');location.href='add2.php'</script>" ;exit;



mysql_free_result($query);exit;

}

else{

mysql_query($sql_luck);

echo"<script>alert('哟！成功！');location.href='index.php'</script>";

echo "插入成功";

}









?>

<form action="add.php" method="post">

用户：<input type="text" name="user" value="请输入用户名" size="20" maxlength="10"/><br/>

标题:<input type="text" name="title" value="请输入内容" size="40" maxlength="40"/><br/>





内容:<textarea name="content" rows="10" cols="50" wrap="off">

text</textarea>

<br/>

<input type="submit" name="sub" value="Release"/><br/>

<form/>



[解决办法]
php 里面能用and吗还是用&&符号吧。？
[解决办法]
你if判断仔细看看里边缕缕。好么？