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

Did you know?Explore Trending and Topic pages for more stories like this.
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?
No comments posted yet

Your Answer:

Login to answer
83 Like 35 Dislike
Previous forums Next forums
Other forums

Users and Groups with PHP Classes
Hi,

I have setup what I hope to be a good working User class. Now I want to introduce group m

Is it possible to stop reservation creation in PM Order?
Hi All,

Is it possible to stop reservation creation in PM Order?

Thanks in adv

C problem struct and string
Hi guys,

This is my first post and I'm hoping the experts here can help me solve my problem.<

modifying a property of an object from a different class
I have 2 classes:
- Math
- Distance

in my math class, I have this line:
$distance =

help with variable
I've got a problem, i want to echo some images depending on the $id, however for me to get that id i

Problems with adding a link to one position in a 'foreach' loop, please help
Hello!

Iam pretty new to programming and I wanna create a table with users from an array. It

Save cookie to DB
I'm working on a pixel tracking script for an incentive website and I need to use an ASP script to s

Add "width" check when upload
Hi!

Can someone add a function that is checking if picture witdh is bigger then 800px whwn up

Add 5 to a variable when a button is clicked, and re-run a for loop
So I'm making a feedback sort of section on a website with MySQL and PHP, I've gotten the script to

Splitting Attributes
SQL> SELECT I_NAME, substr(I_NAME,1,instr(I_NAME,'O')) "First part",

substr(I_NAME, IN

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash