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

Delete records not in top 15
Hi,

I'm creating a hall of fame page in my game and the page will only display the top 15 sco

. and .. appearing instead of pictures
First of all, thanks very much for providing this forum. It is very much appreciated!

My son

tag inside php...
hi


Code: <?php
echo "<td width="$columnWidth%" align=&

php email checker
I am having alot of trouble finding info on how to do these email things. I need to do the following

b+ tree
Hi
can every body help me about b+ tree ?(insert & delete)

Get keys and values from an array
Hellow,

I have an array $Data with keys and values. With a foreach I can display all the valu

why aint this working?
i have this code:

Code: $num = 250;
$count = ($num - $rcount);

echo $rc

Session problem?!?
Hello All! I am very new to the php world but I am working on fixing things that a previous programm

Login logout link help
Hi all,

Im new to php and Im having trouble creating a login/logout link for my page that dis

Spliting paragraph into sentences and attach in
Here is what I am trying to do

example: Para1[123.456.789!] 3 sentences
Para2

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