How to add Text editor for text area

Hello DP members.
I am going to make a simple CMS system like WP or blogger as a final project in university. i want to add text editor in admin area so that admin can add customise text like bold, italic, headings etc. please tell me how can i add it..if you have some type of code for it please share with me.
In admin panel under the publish a post page i have two fields title and contents. i want to add it in the content field. i Did not have full command on PHP but can do major with a little bit assistance
Thanks in Advance ..
waiting for reply

 

whats the purpose of having this.. Please clarify... Do you wish to allow your user to post on your blog as a guest or for another purpose.

 

yes i want that admin use this to add post in the database

 

Hey Tony,
The editor you're seeking for is called as WYSIWYG (What you see is what you get) editors! It's best editors to provide a better content editing platform to the users.
for your project, I would like to suggest you to go with a CKEditor .
Here is a quick tutorial for you. It learns you to Integrate your CKEditor with PHP.
Hope it helps you.
Thanks