What are the php comments?

Comments in PHP code will not be read and executed as programs. Its only purpose is to be read by code editors.

PHP supports three types of comments

1. Start with // as a single-line comment. For example:

<?php
    // Author: mole
    // Date:2012-2-8
    echo "Welcome!";
?>

2. Start with # as a single-line comment. For example:

<?php
    # Author: mole
    # Date:2012-2-8
    echo "Welcome!";
?>

3. Multi-line comments starting with /* and ending with * /. For example:

<?php
    /*
      下面是计算员工平均
      工资的函数

    * /
    calculate();

?>

Note: There should be no space between * and / above.

The role of php comments

1. Explain the code function;

2.Debug the program.

Note: It is necessary to comment in the code. Standard comments make the source code easier for humans to understand, and can help us understand the code written by others or ourselves before.

For more PHP related knowledge, please visit php中文网!

The above is the detailed content of What are the php comments?. For more information, please follow other related articles on the PHP Chinese website!