Dynamic Dependent Dropdown using Ajax in php

The Dynamic dependent dropdown list box will auto fill data in the select box based on the parent select box selection. This type of dynamic dependent select box mainly used in selection of country-state-city or category-subcategory. It will load dynamic data in dropdown select boxes without refreshing of page then this type of feature will makes our web application more user-friendly. By using Jquery with Ajax we can simply developed this type of dynamic dependent select box feature without refresh of web page.

In this php web tutorial, We will learn how can we make dynamic dependent select box or dropdown in php by using Ajax with Jquery and Mysql database. For display dynamic dependent dropdown feature, here we will take example of relational select box of country state city in PHP. Here State select box data will be related to country select box and city select box data will be related to state select box. By the selection of dropdown select box of country and state then dependent select box of state and city data will be get from the mysql database without refresh of page by using Ajax with Jquery in PHP.

Here In this example on page load it will displays countries data in country select box. When we have select country then respective states data will be fetched from mysql table and display under the states dropdown without reloading of page. Same way when user has select state from state dropdown then selected state cities data will be fetched from mysql database and fill under city dropdown.

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