PHP Syntax

title: PHP Syntax

Basic PHP Syntax


All PHP files are saved by the extension .php. PHP scripts can be added anywhere in the document. A PHP script starts with <?php and ends with ?>.

<?php //PHP code goes here ?>


To print any statement in PHP we use echo command.

Code sample

<!DOCTYPE html> <html> <body> <h1>My first PHP page</h1> <?php echo "Hello World!"; ?> </body> </html>
NOTE: PHP statements ends with semicolon ;

Declaring Variables

We declare variables in PHP by adding dollar $ sign before them.

<?php $x = 5; echo $x; ?>

Comments in PHP

To write a single line comment in PHP we put hashtag # or by putting // before the comment.

<?php # This is a single line comment // This is also a single line comment ?>

To write a multiple line comment we start the comment with /* and end with */.

<?php /* This is a Multiple line comment. */ ?>

We can also comment out some parts of the code line.

Code Sample

<!DOCTYPE html> <html> <body> <?php // You can also use comments to leave out parts of a code line $x = 5 /* + 15 */ + 5; echo $x; ?> </body> </html>

You can see more about this on PHP Manual

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