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Wednesday, August 28, 2013

Comments in PHP

A comment in PHP code is a line that is not read/executed as part of the program. Its only purpose is to be read by someone who is editing the code!

Comments are useful for:
  • To let others understand what you are doing - Comments let other programmers understand what you were doing in each step (if you work in a group)
  • To remind yourself what you did - Most programmers have experienced coming back to their own work a year or two later and having to re-figure out what they did. Comments can remind you of what you were thinking when you wrote the code


PHP supports three ways of commenting:

Example
<!DOCTYPE html>
<html>
<body>

<?php
// This is a single line comment

# This is also a single line comment

/*
This is a multiple lines comment block
that spans over more than
one line
*/
?>

</body>
</html>

Preview
Hello World!

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