Can't seem to capture a variable in a chained select

Posted on 16th Feb 2014 07:03 pm by admin

I'm *this* close to having a chained select running but for some reason it doesn't seem to be picking up a variable.

Code: <?php

require ('inc/connection.php');

//seeming that we are just submitting and refreshing to the one page we need to check if the post variable is set, and if so a couple of other variables are set
if(!isset($_POST['state'])) {
$next_dropdown = 0;
}
else {
//When set this variable reveals the next drop down menu
$next_dropdown = 1;
//this variable keeps the previous selection selected
$selected = $_POST['state'];
}
?>

<form name="form" method="post" action="">
<select name="state" style="font-size:20px;">
<option value="NULL">State</option>
<?php
$query = "SELECT id, name FROM state ORDER BY name ASC";
$result = mysql_query($query);
while($row = mysql_fetch_array($result))
{?>
<option value="<?php echo $row[0]; ?>" onClick="document.form.submit()" <?php if(isset($selected) && $row[0] == $selected) {echo "selected='selected'";} ?>><?php echo $row[1]; ?></option>n";
<?php }
echo '</form>n';
//this is where the other form will appear if the previous form is submitted
if($next_dropdown == 1) {?>
<form name="form2" action="" method="post">
<select name="city">
<option value="NULL">City</option>
<?php
$query2 = "SELECT * FROM city WHERE state_id = " . $row[0];
$result2 = mysql_query($query2);
while($row2 = mysql_fetch_array($result2))
{ ?>
<option value="<?php echo $row2[0]; ?>" onClick="document.form2.submit()"><?php echo $row2[1]; ?></option>
<?php }?>
</select>
</form>
<?php }
?>

The state drop down works fine. Once a state is selected, it will display the city drop down. However, the city drop down never populates. It's as though it forgets what $row[0] is. Any thoughts?

Your Answer:

Login to answer

Other forums

Remove directories not empty
hi,
i have an array that contains some names (1,4,6,56...). Every integer is a name of a folder.<

Calling All PHPFREAKS Blackberry Users
Are you a member of PHPFreaks and have a blackberry? Well RIM just recently released Blackberry Mes

Email with Attachments in PHP
Hi Friends

How to send email in PHP with attachment.
I know simple mail can be sent with

send() and recv() parameters confusion
On server Side:
int recv (Socket,Buffer, Length, Flags)
On Client Side:
int send (Soc

MS Exchange 2007 integration with ECC 6.0
Hello Experts,
We have ECC 6.0 and MS Exchange 2007. We need to integrate ECC 6 and MS Excha

How to make a mail Form secure?
I want to create an email Form on my web site. How can I make the Form secure so the submitted info

Detail Expenses Report by Cost Center
I would like to obtain a report out of SAP that shows a list of expenses by cost center that shows t

PHP and XML image gallery variable issue
I'm trying to display the large image on the same page as the thumbnails, to do that I'm passing a v

help with multi-update
Now sure how to ask this really....
10g database if that matters.

I have a customer

problem in pagination when processing with selectbox form
Hi,

I have a search form, with select boxes, if am selecting the value from the form, it work