Comment out HTML, CSS, Javascript and PHP

[Tachira]

Hi everyone,

Sometimes I get confused with comment out in html, css, javascript and php
Could you show me any way to use exact comment out in these programming languages?

Thank much!

 

[elcidofaguy]

PHP use either:
// Line by line comment

The below works for PHP and CSS:
/*
Multiple lines ....
second line etc ....
*/

/*Or on a single line*/

For HTML (works on multiple lines also):
<!-- Comment -->

 

[Hassan]

HTML comment

<!--
<code>
 -->

CSS, JavaScript, and PHP Comments

// <code>

or

/*
<code1>
<code2>
<code3>
*/