How to comment in HTML, JS, PHP, MySQL?

# 1.HTMLNote

# & LT;!-HTML Note-& GT;

2.CSSComments

/*CSS Comments*/

3.JavascriptComment

• ##Single-line comment: //Single-line comment

• Multi-line comment: /*Multi-line comment*/

4.MySQLComments

##Single-line comments: --Single-line comments
Multi-line comments: /*Multi-line comments*/

PHPComments

Single-line comments: //Single-line comments
Multi-line comments: /*Multi-line comments*/

• 
  

## 6.

Comments

##
Multi-line php video tutorial

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