How Can I Create a Simple \'Hello World\' AJAX Example with PHP and jQuery?

Basic PHP and AJAX

Question:

Colin, a self-taught developer, seeks assistance with implementing AJAX in a PHP system. He has encountered difficulties with existing scripts and requests a working "hello world" example to establish baseline functionality.

Answer:

Utilizing jQuery alongside AJAX can significantly simplify the process. Below are the steps involved:

PHP Page (hello.php):

<?php
  echo "Hello World";
?>

Main HTML Page:

1. Include jQuery Library:

   <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>

2. AJAX Call:

   <script type="text/javascript">
    $(function(){
       $.get("hello.php", function(data){
           alert(data);
       });
    });
   </script>

This simplified example demonstrates a basic AJAX setup to retrieve and display the string "Hello World" using jQuery's GET request.

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