How to pop an alert message box using PHP ?
An alert box is used in the website to display a warning message to the user that they have entered the wrong value other than what is required to fill in that position. An alert box can still be used for friendlier messages. The alert box gives only one button “OK” to select and proceed.
Program 1: PHP program to pop up an alert box on the screen.
Program 2: PHP program to pop up an alert box on the screen.