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我只是想知道如果有人知道任何好的方法來防止Sql注入此代碼。我想要的最後一件事是有人盜用我的數據庫。我對此很新,希望聽到專家的意見。謝謝。防止此代碼上的SQL注入方法
<?php
$input = $_GET['input'];//Note to self $input in the name of the search feild
$terms = explode(" ", $input);
$query = "SELECT * FROM content WHERE ";
foreach ($terms as $each){
$i++;
if ($i == 1)
$query .= "keywords LIKE '%$each%' ";
else
$query .= "OR keywords LIKE '%$each%' ";
}
// connecting to our mysql database
mysql_connect("localhost", "username", "password");
mysql_select_db("database");
$query = mysql_query($query);
$numrows = mysql_num_rows($query);
if ($numrows > 0){
$i = 0;
while ($row = mysql_fetch_assoc($query)){
$i++;
$id = $row['id'];
$title = $row['title'];
$description = $row['description'];
$keywords = $row['keywords'];
$link = $row['link'];
$plink = $row ['plink'];
$views = $row ['views'];
if($i == 3){
echo '<td valign="top" "width="248" height="100%">
<table width="100%" border="0">
<tr>
<td align="center" valign="top"><a href='.$link.'>
<img src='.$plink.'width="200" height="151" vspace="5" />
<br><b><a href='.$link.'>'.$title.'</b></a>
<br><strong><span style="line-height:20px">Total views: '.$views.'</span></strong>
</td>
</tr>
</table>
</td><tr>';
}
else{
echo '<td valign="top" "width="248" height="100%">
<table width="100%" border="0">
<tr>
<td align="center" valign="top"><a href='.$link.'>
<img src='.$plink.'width="200" height="151" vspace="5" />
<br><b><a href='.$link.'>'.$title.'</b></a>
<br><strong><span style="line-height:20px">Total views: '.$views.'</span></strong>
</td>
</tr>
</table>'
;
}
}
}
else
echo "No results found for \"<b>$input</b>\"";
// disconnect
mysql_close();
?>
[**在新的代碼,請不要使用'mysql_ *'功能**](http://bit.ly/phpmsql)。他們不再被維護[並且被正式棄用](http://j.mp/XqV7Lp)。看到[**紅框**](http://j.mp/Te9zIL)?學習[*準備的語句*](http://j.mp/T9hLWi),並使用[PDO](http://php.net/pdo)或[MySQLi](http://php.net/ mysqli) - [這篇文章](http://j.mp/QEx8IB)將幫助你決定哪個。如果你選擇PDO,[這裏是一個很好的教程](http://j.mp/PoWehJ)。 –
在這裏檢查http://stackoverflow.com/questions/60174/how-can-i-prevent-sql-injection-in-php?rq=1 – krishna
與[parametrerized]一起使用PDO(http://stackoverflow.com/問題/ 60174/how-can-i-prevent-sql -injection-in-php?rq = 1)查詢。 – Rikesh