MySQL - UPDATE and DELETE QUERY not working - php

Question

I'm just a beginner in terms of programming, so I'm just referring all my codes through tutorials. Luckily, I found this online tutorial in youtube where users are allowed to add, update, and delete data in mysql using php. I follow all his instructions, I got it working but then it stopped when I added css on it.
This is not a general issue, I just need some help. If anyone can help me, much appreciated. Thank you so much.
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "rssfeed";
$connect = mysql_connect($servername, $username, $password, $dbname);
if (!$connect) {
die("Connection failed. Error" . mysql_error());
}
$database = mysql_select_db($dbname, $connect);
if (!$database) {
die("Can't select database");
}
$sql = "SELECT * FROM record";
$data = mysql_query($sql, $connect);
if (isset($_POST['update'])){
$updateQuery = "UPDATE record SET name = '$_POST[name]', url = '$_POST[url]', description = '$_POST[desc]' WHERE name = '$_POST[hidden]'";
mysql_query($updateQuery, $connect);
header("Location: maintenance.php");
};
if (isset($_POST['delete'])){
$deleteQuery = "DELETE FROM record WHERE name = '$_POST[hidden]'";
mysql_query($deleteQuery, $connect);
header("Location: maintenance.php");
};
if (isset($_POST['add'])){
$addQuery = "INSERT INTO record (name, url, description) VALUES ('$_POST[iName]', '$_POST[iUrl]', '$_POST[iDesc]')";
mysql_query($addQuery, $connect);
header("Location: maintenance.php");
};
echo "<div class=center>
<table id=myTable border=1>
<tr>
<th> Name </th>
<th> URL </th>
<th> Description </th>
</tr>";
while($record = mysql_fetch_array($data)) {
echo "<form method=post action=maintenance.php>";
echo "<tr>";
echo "<td>" . "<input type=text name=name id=name value=" . $record['name'] . " </td>";
echo "<td>" . "<input type=text name=url id=url value=" . $record['url'] . " </td>";
echo "<td>" . "<textarea rows=1 cols=50 wrap=physical name=desc id=desc>" . strip_tags($record['description']) . "</textarea></td>";
echo "<input type=hidden name=hidden value=" . $record['name'] . ">";
echo "<td>" . "<input type=submit name=update id=update value=update" . " </td>";
echo "<td>" . "<input type=submit name=delete id=delete value=delete" . " </td>";
echo "</tr>";
echo "</form>";
}
echo "</table>";
echo "<table border=1>";
echo "<form method=post action=maintenance.php>";
echo "<tr>";
echo "<td><input type=text name=iName></td>";
echo "<td><input type=text id=url name=iUrl></input></td>";
echo "<td><textarea rows=1 cols=50 name=iDesc></textarea></td>";
echo "<td>" . "<input type=submit name=add id=add value=add" . " </td>";
echo "</tr>";
echo "</form>";
echo "</table>";
echo "</div>";
mysql_close($connect);
?>

Answer 1

In your queries, $_POST[name] should be $_POST[\"name\"]. BUT, this is terrible, you are very open to SQL injections.
Please have a read of this and stop using mysql_query (it's deprecated)

Answer 2

you have several errors in your echo output..
echo "<td>" . "<input type=text name=name id=name value=" . $record['name'] . " </td>";
You have forgot the single quotes for each html-element-attribute and the bigger then at the end of multiple input elements...
try this:
echo "<td><input type='text' name='name' id='name' value='" . $record['name'] . "'> </td>";