PHP form update mysql database not completing updates [closed] - php

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so I have been tinkering around with mysql database update function for my invoice management system for work, but I cant seem to get it to actually edit the records in my mysql database for an unknown reason. Here is my code for my edit.php page
<?php
$con = mysql_connect("localhost", "name", "password");
if (!$con) {
die("Can not connect: " . mysql_error());
}
mysql_select_db("inventory",$con);
if (isset($_POST['update'])){
$UpdateQuery = "UPDATE invoice SET Inv #='$_POST[inv_number]', Date Type='$_POST[date_type]', ID='$_POST[id]' WHERE id='$_POST[id]'";
mysql_query($UpdateQuery, $con);
};
$sql = "SELECT * FROM invoice";
$myData = mysql_query($sql,$con);
echo "<table border=1>
<tr>
<th>Inv #</th>
<th>Date Type</th>
<th>ID</th>
</tr>";
while($record = mysql_fetch_array($myData)){
echo "<form action=edit.php method=post>";
echo "<tr>";
echo "<td>" . "<input type=text name=inv_number value=" . $record['inv_number'] . " </td>";
echo "<td>" . "<input type=text name=date_type value=" . $record['date_type'] . " </td>";
echo "<td>" . "<input type=text name=id value=" . $record['id'] . " </td>";
echo "<td>" . "<input type=hidden name=hidden value=" . $record['id'] . " </td>";
echo "<td>" . "<input type=submit name=update value=update" . " </td>";
echo "</tr>";
echo "</form>";
}
echo "</table>";
mysql_close($con);
?>
This is the button I have on my search.php page where my records are being shown.
<a href='edit.php?edit=$row[id]'>edit</a>
Upon entering the edit.php page when i click on my edit button for a specific record, it shows all the records in my table, which is not ideal as I would much rather see only the record that I want to edit/update. These two problems are a problem that I have been unable to solve. Any help is appreciated. Thx in advance everyone.

Answer 1

Is your MySQL column name really Inv #? If so, you need to add backticks like this:
`Inv #`
But looking at your form, it looks like the field name is inv_number. Also, you are seeing all records because your select clause does not have a where modifier.

Answer 2

Replace your line:
$sql = "SELECT * FROM invoice";
with this line
$where = '';
if(!empty($_GET) && !empty($_GET['edit'])) {
$where = ' where id='.$_GET['edit'];
}
$sql = "SELECT * FROM invoice".$where;