Syntax


A PHP script can be placed anywhere in the document.


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



<?php
// php code 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:


The basic unit of PHP code is called a statement, which ends with a semicolon(;).


In PHP, all keywords like if, else, while, etc., classes, functions, and user-defined functions are NOT case-sensitive.


Usually one line of code contains just one statement, but we can have as many statements on one line as you want.


<php
    print "hello studentsempire !";
?>



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