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PHP - Validate Username Availability Source Code
In this tutorial, we will create a Validate Username Availability using PHP. This code can validate the given username if it is available to register to the MySQLi database server. The system uses PHP POST to initiate a method that verifies the username input if it is possible to be disclosed to the database using MySQLi SELECT by adding a WHERE clause between `username` and the input value. This a user-friendly program feel free to modify and use it to your system.
We will be using PHP as a scripting language that interprets in the webserver such as xamp, wamp, etc. It is widely used by modern website application to handle and protect user confidential information.