The multi-line comment can be used to comment out large blocks of code. It begins with /* and ends with */.

/* This is a multi-line comment.
   It spans multiple lines.
   This is still part of the comment. 
*/

Remarks

Keep the following tips in mind when deciding how to comment your code:

• You should always write your code as if comments didn't exist, using well chosen variable and function names.
• Comments are meant to communicate to other human beings, not to repeat what is written in the code.
• Various php commenting style guides exist (e.g. pear (opens new window), zend (opens new window), etc). Find out which one your company uses and use it consistently!