a question about form input

[xianaier]

hey guys I do basic php stuff but I am no pro

I created a form and php file that lets me ad articles to my site and it works well here is where I am stuck.

when I type or paste in an article I first paste it into notepad and replace " with \"
and that works fine. But would some one tell me the code to use in my php file to replace the " with \" as the input from the form is being processed by my file.

so I can cut out the extra step with notpad.

Thanks in advance.