PHP Syntax and basic program.

Basic PHP Syntax

A PHP script can be placed anywhere in the document.

A PHP script starts with <?php and ends with ?>:

<?php
// PHP code goes here
?>

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:

Example

<!DOCTYPE html>
<html>
<body>

<?php
   echo "My first PHP script!";
?>

</body>
</html>
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