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PODeleting row from a MySQL Table using checkboxes and a button
 

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  1. PODeleting row from a MySQL Table using checkboxes and a button
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    <p>I want to make a table with the members of a website and in this table when you check the checkboxes and you press the "Delete" button to delete this member from the members table and also to delete his applications from the applications table. With my code when I click the delete button it prints me "Query failed"</p> <p>This is my code:</p> <pre><code>&lt;?php require_once('config.php'); $errmsg_arr = array(); $errflag = false; $link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD); if(!$link) { die('Failed to connect to server: ' . mysql_error()); } $db = mysql_select_db(DB_DATABASE); if(!$db) { die("Unable to select database"); } $data = mysql_query("SELECT * FROM members ") or die(mysql_error()); echo ' &lt;form action="members-exec.php"&gt; &lt;table width="760" border=1&gt; &lt;tr&gt;'; if(isset($_SESSION['SESS_RANK'])) { echo ' &lt;th&gt;&lt;/th&gt;'; } echo ' &lt;th&gt;Служител:&lt;/th&gt; &lt;th&gt;Отпуск отпреди 2009год.&lt;/th&gt; &lt;th&gt;Отпуск от мин. год.&lt;/th&gt; &lt;th&gt;Отпуск от тек. год.&lt;/th&gt; &lt;/tr&gt;'; while($info = mysql_fetch_array( $data )) { echo ' &lt;tr&gt;'; if(isset($_SESSION['SESS_RANK'])) { echo ' &lt;td&gt; &lt;input type="checkbox" name="'.$info['firstname'] .' '.$info['lastname'] .'" value="'.$info['firstname'] .' '.$info['lastname'] .'" /&gt; &lt;/td&gt;'; } echo ' &lt;td&gt;'.$info['firstname'] .' '.$info['lastname'] .'&lt;/td&gt; &lt;td&gt;'.$info['predi'] .'&lt;/td&gt; &lt;td&gt;'.$info['minali'] .'&lt;/td&gt; &lt;td&gt;'.$info['tekushti'] .'&lt;/td&gt;'; } echo' &lt;/tr&gt; '; echo '&lt;/table&gt;'; if(isset($_SESSION['SESS_RANK'])) { echo ' &lt;br&gt; &lt;input type="submit" name="remove" value="Delete" /&gt;&lt;/form&gt;'; } ?&gt; </code></pre> <p>This is my php part:</p> <pre><code> &lt;?php session_start(); require_once('config.php'); $link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD); if(!$link) { die('Failed to connect to server: ' . mysql_error()); } $db = mysql_select_db(DB_DATABASE); if(!$db) { die("Unable to select database"); } $qry = "DELETE FROM members WHERE login='$login' AND passwd='".md5($_POST['password'])."'" &amp;&amp; "DELETE FROM applications WHERE userfname = '$userfname'"; $result = mysql_query($qry); if($result) { header("location: members.php"); exit(); }else { die("Query failed"); } ?&gt; </code></pre> <p>EDIT:</p> <pre><code>&lt;?php session_start(); require_once('config.php'); $link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD); if(!$link) { die('Failed to connect to server: ' . mysql_error()); } $db = mysql_select_db(DB_DATABASE); if(!$db) { die("Unable to select database"); } $qry = "DELETE FROM members WHERE login='$login' AND passwd='".md5($_POST['password'])."'" ; $result = mysql_query($qry); $qry = "DELETE FROM applications WHERE userfname = '$userfname'"; $result = mysql_query($qry); if($result) { header("location: members.php"); exit(); }else { die("Query failed"); } ?&gt; </code></pre>
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    1. CORemove the @ infront of the mysql_query. This might surpress error messages - http://php.net/manual/en/language.operators.errorcontrol.php
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    2. CO@JLC007 That's true, but that isn't his problem, in this case, he is trying to execute two delete queries as a single query and the database is rejecting it.
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