Updating multiple rows in mysql...how to add a checkbox!

[Benbo1980]

Hi there,

 

I have successfully setup a page using a tutorial (shown http://www.phpeasystep.com/mysql/10.html)

 

It's all working fine as it stands.

 

I have now added another column to the database that can either be 1 or 0 and I would like to be able to change it on the update page using a checkbox for each record.

 

The code I tried was as follows:

 

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

<?php 
$host="localhost"; // Host name 
$username=""; // 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> 
<td align="center"><strong>On / Off</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 $rows['email']; ?>"></td> 
<td align="center"><input name="ONOFF[]" type="checkbox" id="ONOFF" value="1" 
<?php if ($rows['ONOFF'] ==1) { echo "checked";} else {} ?> 
></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[$i]', ONOFF='$ONOFF[$i]' WHERE id='$id[$i]'"; 
$result1=mysql_query($sql1); 
} 
} 

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

 

 

What happens is weird - no matter which checkboxes are ticked, the database appears to update the wrong records. For example, if I had checked every other record (4 in total) and clicked submit, the database would have simply changed the top four records, not necessarily the ones I had originally selected.

 

Any ideas?!  ???

 

Thanks,

 

Ben

 

[DoddsAntS]

Hi,

 

Here are a few things for you to think about

 

if you click 4 check boxes your ONOFF array will look like this

 

ONOFF[0] = 1

ONOFF[1] = 1

ONOFF[2] = 1

ONOFF[3] = 1

 

This is why the system is setting the first x records to be 1 where x is the number of boxes you check.

 

Any records that you have been set to on previously will stay as 1

 

I would recommend setting the value to be the id of the record you want to update as you only have an on or off value for the field.

 

A

[Benbo1980]

Thanks for the speedy reply,

 

If I set the value of the checkbox array to the id (presumably by using <? echo $rows['id']; ?> in the "value") will the UPDATE section need to change from:

 

<?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[$i]', ONOFF='$ONOFF[$i]' WHERE id='$id[$i]'"; 
$result1=mysql_query($sql1); 
} 
} 

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

 

Thanks,

 

Ben

[DoddsAntS]

Yeah, you'll need to change the update query

[Benbo1980]

Sorry to push you even more, but what would you suggest I change it to?

 

I'm guessing I would need somthing to tell the UPDATE function that checked = 1 and unchecked = 0 ???

 

But I'm not so sure how to code that...

 

Thanks in advance,

 

Ben

[Benbo1980]

Any ideas anyone?  ???

 

Thanks

 

Ben