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PODelete multiple rows by selecting checkboxes using PHP
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  1. PODelete multiple rows by selecting checkboxes using PHP
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    copied!<p>I want to delete multiple rows from MYSQL database. I have created this delete.php file to select various links and delete them using checkboxes. </p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;title&gt;Links Page&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;h2&gt;Choose and delete selected links.&lt;/h2&gt; &lt;?php $dbc = mysqli_connect('localhost','root','admin','sample') or die('Error connecting to MySQL server'); $query = "select * from links ORDER BY link_id"; $result = mysqli_query($dbc,$query) or die('Error querying database'); $count=mysqli_num_rows($result); ?&gt; &lt;table width="400" border="0" cellspacing="1" cellpadding="0"&gt; &lt;tr&gt; &lt;td&gt;&lt;form name="form1" method="post" action=""&gt; &lt;table width="400" border="0" cellpadding="3" cellspacing="1" bgcolor="#CCCCCC"&gt; &lt;tr&gt; &lt;td bgcolor="#FFFFFF"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Delete multiple links&lt;/strong&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;#&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Link ID&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Link Name&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Link URL&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php while ($row=mysqli_fetch_array($result)) { ?&gt; &lt;tr&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;input name="checkbox" type="checkbox" value="&lt;?php echo $row['link_id']; ?&gt;"&gt;&lt;/td&gt; &lt;td bgcolor="#FFFFFF"&gt;&lt;?php echo $row['link_id']; ?&gt;&lt;/td&gt; &lt;td bgcolor="#FFFFFF"&gt;&lt;?php echo $row['link_name']; ?&gt;&lt;/td&gt; &lt;td bgcolor="#FFFFFF"&gt;&lt;?php echo $row['link_url']; ?&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php } ?&gt; &lt;tr&gt; &lt;td colspan="4" align="center" bgcolor="#FFFFFF"&gt;&lt;input name="delete" type="submit" value="Delete"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;table width="400" border="0" cellspacing="1" cellpadding="0"&gt; &lt;tr&gt; &lt;td&gt;&lt;form name="form1" method="post" action=""&gt; &lt;table width="400" border="0" cellpadding="3" cellspacing="1" bgcolor="#CCCCCC"&gt; &lt;tr&gt; &lt;td bgcolor="#FFFFFF"&gt;&amp;nbsp;&lt;/td&gt; &lt;td colspan="3" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Delete multiple links&lt;/strong&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;#&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Link ID&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Link Name&lt;/strong&gt;&lt;/td&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;strong&gt;Link URL&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php while ($row=mysqli_fetch_array($result)) { ?&gt; &lt;tr&gt; &lt;td align="center" bgcolor="#FFFFFF"&gt;&lt;input name="checkbox" type="checkbox" value="&lt;?php echo $row['link_id']; ?&gt;"&gt;&lt;/td&gt; &lt;td bgcolor="#FFFFFF"&gt;&lt;?php echo $row['link_id']; ?&gt;&lt;/td&gt; &lt;td bgcolor="#FFFFFF"&gt;&lt;?php echo $row['link_name']; ?&gt;&lt;/td&gt; &lt;td bgcolor="#FFFFFF"&gt;&lt;?php echo $row['link_url']; ?&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php } ?&gt; &lt;tr&gt; &lt;td colspan="4" align="center" bgcolor="#FFFFFF"&gt;&lt;input name="delete" type="submit" value="Delete"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php // Check if delete button active, start this if(isset($_POST['delete'])) { $checkbox = $_POST['checkbox']; for($i=0;$i&lt;count($checkbox);$i++){ $del_id = $checkbox[$i]; $sql = "DELETE FROM links WHERE link_id='$del_id'"; $result = mysqli_query($sql); } // if successful redirect to delete_multiple.php if($result){ echo "&lt;meta http-equiv=\"refresh\" content=\"0;URL=view_links.php\"&gt;"; } } mysqli_close($dbc); ?&gt; &lt;/table&gt; &lt;/form&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>This doesn't seem to delete any row. My data is populated in the table. I guess the problem is with the PHP code. Please help me out here.</p>
 

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