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>
<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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