Dynamic Dependent Drop down in PHP using jQuery AJAX
The dynamic dependent select box is used to automatically add dependent data to the drop-down list. Based on the drop-down options, the dependent data is retrieved from the database and displayed in the next select option field. In general, the field of dynamic dependency select option is used to implement the country,state and city functionality. Using Ajax and PHP, you can easily implement dynamically dependent drop-down without refreshing the page.