Comments in php

Back Next

Comments in php

PHP is unique in that if offer several ways to comment code. There are 2 options for single-line commenting, and another option for multi-line commenting.

Single-line comments in PHP

There are two different ways to insert single-line comments in PHP. One is based on the Unix style for shell scripts, while the other is based on comments in the C++,Java programming environment.

<?php
# This is a comment in PHP using the Unix style
//This is a comment in PHP using the C++,Java style
?>

Which style should you use? Technically speaking, there’s really no benefit or drawback to either. It’s simply a matter of preference.

Multi-line comments in PHP

What if you want to insert a large block of text that shouldn’t be interpreted as code or displayed on screen? This is the perfect opportunity to utilize a multi-line comment. Just like the 2 single-line comment styles, PHP’s multi-line comment is derived from another programming language like Java

<?php
/*
This is a multi-line comment in PHP.
The style for mult-line comments in PHP is
derived from the Java programming language.
Like all comments, none of this will be displayed on screen.
*/
?>

Back Next

Categories: PHP Tutorial