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PHP Double Dropdown List Download Script

Dynamic populating three drop down list based on the selected value of first two list

Before reading this please read the dynamic filling of second drop down list with selected value of first list. Here we will work with three drop down lists where the value of second list is populated based on the selection of first list and the values of third drop down list are populated based on the selection of second drop down list. Here is the page is reloaded on selection of second drop down list and for this the table structure is changed with creation of third table.

If you are facing any problem in using this code, please post it in php discussion forum with your error messages, bugs etc ..

view demo for three dropdown list here


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kiran04-11-2013
i am using 3 dropdown menues, there are three table in my database,these tables are linked with foreign keys,but when i using just like your dd3.php, then 1st dropdown menu lost their value and get default value

also when i getting the selected value in same page using this self.location="reg3.php?Result=" + nam; in javascript, and when i got notice error. please reply as soon as possible..
Aji Mohan Singh10-02-2014
keep the drop down menu value javascript after submitting
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