PHP Comments

The PHP comment always begins with unique characters and all text that appears between the comment will be ignored.

There are two types of comments.

• Single line comment
• Multiple line comment

Single line comment - will begin with "\\" or "#" symbols, and all text on right will be ignored!

<?php

   echo "Hello Web!";

   // This will output Hello Web!

  // echo "This is comment!";  (This will not output)

  # echo "This is a comment, too !";  (This will not output)
?>

Multiple line comment - begins with " /* " and ends with " */ " , and all text between that symbols will be ignored.

<?php

  /*  This is multiple line comments

   and all this text will be ignored  */

?>

Nested comments are not allowed, and will cause an error!

<?php

  /*  This is multiple line comments

  /* This comment is not allowed */

   and all this text will be ignored  */

?>