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1.3 KiB
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PHP Syntax |
Basic PHP Syntax
Start
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