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

Printing a webpage
I use this to print the webpage: o

storing results of a function - previous result overwritten with new result
I have created a function to validate input.

function validate_dimension($value,$name) {
<

please fix the error
What is the error in the below code ???
Line number On/Off | Expand/Contract <?php

filesize() returns 0
I have a socket program that runs in an infinite loop, listening for connections, in this socket I h

str_replace help
Hey there,

I'm a PHP newb, I'm having troubles with the str_replace function. I want to clean

How to grab certain words ??
I am working with this API

Returns JSON.
curl http://letsbetrends.com/api/current_trends

Table control is disappearing from Screen
Hi Experts,

I have a screen with multiple table control(TC). Each table control has two c

SESSION question
I am building an application , a directory for auctions.
For SEO i made a script which copies a p

What exactly is net neatrality?
What exactly is it? I think it's anti-censorship and... stuff... but I don't really understand it

Preg_match question
I want to use preg_match to make sure a string is always 6 characters long and only contains 0-9 and

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