A PHP script can be placed anywhere in the document and starts with as follow:
<?php and ends with ?>
The default file extension for PHP files is “.php”.
A PHP file normally contains HTML tags, and some PHP scripting code.
Below, we have an example of a simple PHP file, with a PHP script that uses a built-in PHP
function “echo” to output the text “Hello World!” on a web page:
<!DOCTYPE html> <html> <body> <h1>My first PHP page</h1> <?php echo "Hello World!" ?> </body> </html>
My first PHP page