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POUpdating mysql table using checkbox
 

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  1. POUpdating mysql table using checkbox
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    <p>i try to update a mysql table with multiple check box, but my code doesn't seem to work, so any help is welcome. My code is:</p> <pre><code>&lt;strong&gt;Update &lt;strong class="highlight"&gt;multiple&lt;/strong&gt; &lt;strong class="highlight"&gt;rows&lt;/strong&gt; &lt;strong class="highlight"&gt;in&lt;/strong&gt; &lt;strong class="highlight"&gt;mysql&lt;/strong&gt;&lt;/strong&gt;&lt;br&gt; &lt;?php $host="localhost"; // Host name $username="root"; // Mysql username $password="root"; // Mysql password $db_name="db_test"; // Database name $tbl_name="test_table"; // Table name // Connect to server and select databse. mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB"); $sql="SELECT * FROM $tbl_name"; $result=mysql_query($sql); // Count table &lt;strong class="highlight"&gt;rows&lt;/strong&gt; $count=mysql_num_rows($result); ?&gt; &lt;table width="500" border="0" cellspacing="1" cellpadding="0"&gt; &lt;form name="form1" method="post" action="&lt;? echo $_SERVER['REQUEST_URI']; ?&gt;"&gt; &lt;tr&gt; &lt;td&gt; &lt;table width="500" border="0" cellspacing="1" cellpadding="0"&gt; &lt;tr&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Id&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Name&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Email&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Description&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Phone Number&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Operation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php while($rows=mysql_fetch_array($result)) { ?&gt; &lt;tr&gt; &lt;td align="center"&gt;&lt;input type="hidden" name="id[]" value="&lt;? echo $rows['id']; ?&gt;" /&gt;&lt;? echo $rows['id']; ?&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input name="name&lt;? echo $rows['id']; ?&gt;" type="text" id="name" value="&lt;? echo $rows['name']; ?&gt;"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input name="email&lt;? echo $rows['id']; ?&gt;" type="text" id="email" value="&lt;? echo $rows['email']; ?&gt;"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input name="description&lt;? echo $rows['id']; ?&gt;" type="text" id="description" value="&lt;? echo $rows['description']; ?&gt;"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input name="phone_number&lt;? echo $rows['id']; ?&gt;" type="text" id="phone_number" value="&lt;? echo $rows['phone_number']; ?&gt;"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input name="operation&lt;? echo $rows['id']; ?&gt;" type="text" id="operation" value="&lt;? echo $rows['operation']; ?&gt;"&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input name="ONOFF&lt;? echo $rows['id']; ?&gt;" type="checkbox" id="ONOFF" value="1" &lt;?php if ($rows['ONOFF'] ==1) { echo "checked";} else {} ?&gt; &lt;/td&gt; &lt;/tr&gt; &lt;?php } ?&gt; &lt;tr&gt; &lt;td colspan="4" align="center"&gt;&lt;input type="submit" name="Submit" value="Submit"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/form&gt; &lt;/table&gt; &lt;?php // Check if button name "Submit" is active, do this if($Submit) { foreach($_POST['id'] as $id) { $onoff = 0; if (isset($_POST["ONOFF".$id])) { $onoff = 1; } $sql1="UPDATE ".$tbl_name." SET name='".$_POST["name".$id]."', email='".$_POST["email".$id]."', description='".$_POST["description".$id]."', phone_number='".$_POST["phone_number".$id]."', operation='".$_POST["operation".$id]."', ONOFF='".$onoff."' WHERE id='".$id."'"; $result1=mysql_query($sql1); } } if($result1){ header("location:test_update2.php"); } mysql_close(); ?&gt; </code></pre> <p>Thanks for you help.</p> <p>Regards.</p>
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    1. COThis doesn't answer your question, but that code is vulnerable to [SQL Injection](http://en.wikipedia.org/wiki/SQL_Injection).
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    2. CONot to be a downer, but it looks like the tutorial you're using is pretty bad. The use of `$Submit` instead of `$_POST['Submit']` (pointed out by @cichy) indicates that the tutorial author was happily using `register_globals`, which is typically considered very bad practice. (register globals doc: http://php.net/manual/en/security.globals.php)
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