352784 Recode Javascript to PHP

Thank you to all bidders on the previous project. There's been a change in specification so I thought it only fair to repost this project. I need an expert in PHP & Javascript. The attached document gives you a link to a javascript calculator. I need this calculator completely redone in PHP scripting. Once again I do not want a clone of the script in the document I need to rewritten in PHP. ** I would also like to have a widget type area where external users can use javascript to use the script on their webpages.** ** Is a javascript widget possible if the original script is coded in PHP? **