PHP Comments

The PHP comment always begins with a special characters and all text that appears between of 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 W3docs!";

   // This will output Hello W3docs!


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


  # echo "This is 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  */

?>