Any where we can use PHP script inside of the document.
The PHP script start with <?php and ends with ?>
<?php // PHP code goes here ?>
The default file extension is .php ( Eg. test.php )
To get a fell of PHP code, first we will start with simple PHP script. Since “Hello, World!” is an essential example, first we will create a friendly little “Hello, World!” script.
<html> <head> <title>Hello World</title> <body> <?php echo "Hello, World!";?> </body> </html>
It will produce the following output
Note: PHP statements are terminated by semicolon ( ; )
Comments in PHP:
A comment in PHP code is a line, that is not execute or read by program. Below we mentioned the different types of comments in PHP.
<?php // Single line comment # single line comment /* Multiple line comment */ ?>
Case-insensitive in PHP:
In PHP, all user defined function, classes and keywords ( Eg: print, echo, foreach, while, etc., ) are case-insensitive.
<?php print("test"); PrInt("test"); PRINT("test"); ?> Output: test test test