In this tutorial we will learn about PHP syntax.
A PHP script starts with a
<?php and ends with a
?>. Anything written written within those two are considered as php script and executed by the server. Following is an exampl of "Hello World!" PHP script.
<?php echo "Hello World!"; ?>
Note! We can place our PHP code anywhere inside a .php file. Just remember to open and close the PHP code properly.
We can also place our PHP code inside HTML. Following is an example of PHP code inside HTML.
<!DOCTYPE html> <html> <head> <title>Index Page</title> </head> <body> <?php echo "Hello World!"; ?> </body> </html>
Save the above code in a .php file. So, when the file is requested the server will execute the PHP script and return the proper response to the browser.
Like most of the other languages like Java, C#, C++ etc. PHP also supports the two famous type of comments namely, single line comment and the multi line comment.
// to create single line comment. Following is an example of single line comment in PHP.
<?php //this is a single line comment ?>
/* */ to create multi line comment. Following is an example of multi line comment in PHP.
<?php /** * This is a multi line * comment */ ?>