可能重复：
如何防止 SQL 注入？
当我从 Gmail 复制一个主题并将其粘贴到我的脚本上以将其添加为主题时，我的脚本突然遇到了这个问题。
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'no matter where the" at line 2
这个问题发生在我从 Gmail 复制时，虽然我在记事本上粘贴了它，然后我将它复制到我的脚本
这是我添加主题的代码：
<?php
@session_start();
if (!$_SESSION['username']){
echo "<meta http-equiv='refresh' content='0; url=../login.php'/>";
exit();
}
?>
<?php include "../config.php";?>
<html>
<head>
<meta charset="utf-8"/>
<link rel="stylesheet" type="text/css" href="admin.css" media="screen"/>
</head>
<body>
<!-- TinyMCE -->
<script type="text/javascript" src="../editor/tiny_mce.js"></script>
<script type="text/javascript">
tinyMCE.init({
// General options
mode : "textareas",
theme : "advanced",
plugins : "autolink,lists,pagebreak,style,layer,table,save,advhr,advimage,advlink,emotions,iespell,inlinepopups,insertdatetime,preview,media,searchreplace,print,contextmenu,paste,directionality,fullscreen,noneditable,visualchars,nonbreaking,xhtmlxtras,template,wordcount,advlist,autosave",
// Theme options
theme_advanced_buttons1 : "bold,italic,underline,strikethrough,|,justifyleft,justifycenter,justifyright,justifyfull,styleselect,formatselect,fontselect,fontsizeselect",
theme_advanced_buttons2 : "bullist,numlist,|,link,unlink,anchor,cleanup,insertdate,inserttime,preview,|,forecolor,backcolor,hr,|,fullscreen,,ltr,rtl",
theme_advanced_buttons3 : "media,removeformat,cleanup",
theme_advanced_buttons4 : "",
theme_advanced_toolbar_location : "top",
theme_advanced_toolbar_align : "right",
theme_advanced_statusbar_location : "bottom",
theme_advanced_resizing : true,
// Example content CSS (should be your site CSS)
content_css : "css/content.css",
// Drop lists for link/image/media/template dialogs
template_external_list_url : "lists/template_list.js",
external_link_list_url : "lists/link_list.js",
external_image_list_url : "lists/image_list.js",
media_external_list_url : "lists/media_list.js",
// Style formats
style_formats : [
{title : 'Bold text', inline : 'b'},
{title : 'Red text', inline : 'span', styles : {color : '#ff0000'}},
{title : 'Red header', block : 'h1', styles : {color : '#ff0000'}},
{title : 'Example 1', inline : 'span', classes : 'example1'},
{title : 'Example 2', inline : 'span', classes : 'example2'},
{title : 'Table styles'},
{title : 'Table row 1', selector : 'tr', classes : 'tablerow1'}
],
// Replace values for the template plugin
template_replace_values : {
username : "Some User",
staffid : "991234"
}
});
</script>
<!-- /TinyMCE -->
<?php
#=======================================insert news==========================================
if ($_POST['submit']){
$topic_title =$_POST['topic_title'];
$topic =$_POST['topic'];
$id_topic =$_POST['topic_sec'];
$image1 =$_POST['image1'];
$image2 =$_POST['image2'];
$today =gmdate("d,m,Y");
$date =$_POST['date'];
$status =$_POST['status'];
$insert=mysql_query("insert into topics values('','$topic_title','$image1','$image2',
'$id_topic','$topic','$today','','$status')")or die (mysql_error());
}
if ($insert){echo "<script>alert(\"topic has been added\");</script>
<meta http-equiv='refresh' content='0; url=topics.php'/>
";}
?>
<div id='right'>add a new topic</div>
<form action='' method='post' dir='rtl'>
<table width='100%' cellpadding='5' cellspacing='10' dir='rtl'>
<tr>
<td>topic title</td>
<td><input type='text' name='topic_title' id='topic_title'/></td>
</tr>
<tr>
<td>upper image</td>
<td><input type='text' name='image1' size='70%'/></td>
</tr>
<td>left image</td>
<td><input type='text' name='image2' size='70%'/></td>
</tr>
<tr>
<td>topic section</td>
<td>
<select name='topic_sec'>
<?php
$select=mysql_query("select * from sections")or die (mysql_error());
while ($row=mysql_fetch_object($select)){
echo "<option value='$row->id_sec'>$row->sec_name</option>";
}
?>
</select>
</td>
</tr>
<tr>
<td>topic</td>
<td >
<textarea cols='100' rows='25' name='topic' ></textarea>
</td>
</tr>
<tr>
<td>state</td>
<td>
<select name='status'>
<option value='1'>active</option>
<option value='2'>unactive</option>
</select>
</td>
</tr>
<tr>
<td colspan='2' ><input type='submit' id='subbot' name='submit' value='add'/></td>
</tr>
</table>
<input type='hidden' name='date' value='<?=$today;?>'/>
</form>
<br/>
</body>
</html>