How to create dependent dynamic dropdownlist? - php

How can I create a dependent dynamic dropdownlist in php. All of the dropdownlist contents / data's will come from the database (I have no problem populating the dropdownlist with the database content)
i.e
dropdownlist 1
dropdownlist 2
If I select "fruits" on the dropdownlist 1 it will display items on dropdownlist 2 such apple, orange, grape.
Second question:
Is there any counter part of the asp.net updatepanel here in php?
Thanks.

Dynamic Drop Down List for PHP

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inserting the value from dynamic drop down list using jQuery ajax in Laravel .how it is possible?
I search many but not get any answer so help me

Number of dropdowns based on selection of first dropdown

Programming in Bootstrap and PHP I am trying to create a dynamic form which has the following.
User uses a dropdown to select number from 1 to 10.
The page then displays x number of dropdowns.
Each dropdown is the same and displays a list of userID from a MySQL table tblUsers
Once the user makes a selection from each dropdown, it then shows a second dropdown immediately underneath showing a list of videos from a second MySQL table tblVideos. Meaning that the second dropdown is based on the results from the first.
Once all dropdowns have been selected. Submit is pressed and the results are sent as an array to the table tblVideoStored
Any ideas how the PHP and MySQL would be in a simple form..
Based on what you plan to achieve, you may want to look into combining php with ajax (Javascipt). Below are some examples that should set you on the right path
https://www.sitepoint.com/community/t/using-ajax-to-populate-dropdown-menu/4350/2
http://blog.chapagain.com.np/using-jquery-ajax-populate-selection-list/

populating dropdownlist based on the condition when you click on add button in phpgrid

I am using phpgrid in my project and i wanted to see a dropdownlist to be populated based on the condition.
When i click on the add buttoon in phpgrid, it will allow me to select the Country and based on the country selected, the dropdownlist to be generated which belonging to the selected country.
In my MySQL database i have a location tables separated with parent and child columns and i can able to see the proper result in mysql views. The same thing i wanted to implement with phpgrid.
Ref: http://phpgrid.com/
Have you read http://phpgrid.com/example/nested-dropdown/ ? Seems what you are looking for.

Load list dynamically in drupal 7 based on the value selected in another list

Being new to drupal 7 I have the following requirement
I have a business dropdown (list in drupal) based on the selected item in that business list the other list having user should be populated and also there is one more list branches which is in fields collection should also be loaded based on the value selected in the business dropdown.
Thanks in advance
Try Hierarchical Select module.
Demos.
This module defines the "hierarchical_select" form element, which is a
greatly enhanced way for letting the user select items in a hierarchy.
Update
Another option Simple hierarchical select

two dropdownlist

I have two dropdownlist boxes. If I click on the first dropdown box, then the values have been changed in the second listbox accordingly to first listbox.
For example:
One is Fruits,vegetables,Birds. If i click on the Fruits then it shows the fruit list items in the second list box. It is same for other list also.
Hai Praveen,
Have a look at these examples for question reguarding cascading dropdown
http://www.phpclasses.org/browse/package/2053.html
http://www.skillfusion.com/articles/ajaxDropdown.php
http://codestips.com/php-ajax-cascading-dropdown-using-mysql/
http://www.daniweb.com/forums/thread132703.html
http://www.weberdev.com/get_example-4505.html

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