Edit HTML file

Hello, i want code to edit html code via other html / php code, it will add what i type to textbox (sry for my english)
plz help

Do you have the webserver chosen / installed / working ? With php. or a remote server.

And MySql to save the data? Or some other method?

You have much experience with html, php, mysql?

I can full HTML. php a bit, and mysql not.. I heard two methods
TEXT - DAT SHIT
MYSQL - I CANT IT

There are tons of editors for HTML/PHP/CSS that include syntax highlighting as well as auto-completion and such.

For MySQL that is the same case, but if you need to edit the database itself directly, you should check out the MySQL Workbench tools that are free from the developers/community of MySQL.