Update Loop not working 1

[bazaroff]

This code looks like what I need to happen, but before I modified it to use in my web app. I tried it as is. It did not work but I can't figure out why.

<strong>Update multiple rows in mysql</strong><br>

<?php
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="test"; // Database name
$tbl_name="test_mysql"; // 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 rows
$count=mysql_num_rows($result);
?>
<table width="500" border="0" cellspacing="1" cellpadding="0">
<form name="form1" method="post" action="">
<tr>
<td>
<table width="500" border="0" cellspacing="1" cellpadding="0">


<tr>
<td align="center"><strong>Id</strong></td>
<td align="center"><strong>Name</strong></td>
<td align="center"><strong>Lastname</strong></td>
<td align="center"><strong>Email</strong></td>
</tr>
<?php
while($rows=mysql_fetch_array($result)){
?>
<tr>
<td align="center"><? $id[]=$rows['id']; ?><? echo $rows['id']; ?></td>
<td align="center"><input name="name[]" type="text" id="name" value="<? echo $rows['name']; ?>"></td>
<td align="center"><input name="lastname[]" type="text" id="lastname" value="<? echo $rows['lastname']; ?>"></td>
<td align="center"><input name="email[]" type="text" id="email" value="<? echo $rows['email']; ?>"></td>
</tr>
<?php
}
?>
<tr>
<td colspan="4" align="center"><input type="submit" name="Submit" value="Submit"></td>
</tr>
</table>
</td>
</tr>
</form>
</table>
<?php
// Check if button name "Submit" is active, do this
if($Submit){
for($i=0;$i<$count;$i++){
$sql1="UPDATE $tbl_name SET name='$name[$i]', lastname='$lastname[$i]', email='$email[$i]' WHERE id='$id[$i]'";
$result1=mysql_query($sql1);
}
}

if($result1){
header("location:update_multiple.php");
}
mysql_close();
?>


In trying to fix it, I changed the " if($Submit)...." to "if($Submit !='false')..." which did seem to execute an update query, but it erased all the data from the table (or more accurately updated every field to "")

I then instead of running an update had the page display at the bottom each looped update query, and it showed the following...

UPDATE test_mysql SET name= '', lastname='', email='' WHERE id='1'
UPDATE test_mysql SET name= '', lastname='', email='' WHERE id='2'
UPDATE test_mysql SET name= '', lastname='', email='' WHERE id='3'
UPDATE test_mysql SET name= '', lastname='', email='' WHERE id='4'
UPDATE test_mysql SET name= '', lastname='', email='' WHERE id='5'...

Any thought or help on this would be greatly appreciated.
Thanks

 

[skiflyer]

I would set

echo "<form name="Something" method="POST" action="'.$_SERVER['PHP_SELF'].">";

Then the page which displays the form would do updates before drawing the form, then it would draw the appropriate information depending on which button was clicked.