PHP MySQL Website Fix for ShareADs

I need someone to fix and make my PHP MySQL website work as I've forgotten how to handle some of the database tasks. I've got a domain, ---------- , where I want to allow database uploads, and possibly use the data to display on ---------- via IFRAME or file transfers (copy and pastes). I'm not interested in wrestling with phpMyADMIN and need someone to assist.

Scope of work
- Fix and optimize PHP MySQL website for ----------
- Allow database uploads on ----------
- Enable data display on ---------- through iframe or file transfers (copy and pastes)

Additional information
I'm discouraged by security issues in databases and want an easy user experience. Several years since I last worked with phpMyADMIN.

Company details
- Company name: ShareADs BLLC
- Company website: ----------
- ShareADs is a platform for sharing 50% revenues from advertisements and 50% revenues of members purchases coming in from being assigned Revenue Match Partners below one's own Membership. The main domain, ---------- , will not have
databases on it directly; the database will be in ---------- , and then either IFRAMED into ---------- , OR???, pages will be copied and pasted from ---------- and rebuilt in ----------

Ideal Candidate
- Experienced with PHP, MySQL, and phpMyADMIN
- Familiar with iframe integration and file transfer methods

Database platform
MySQL, preferably in my phpMyADMIN

Database type
Relational database

Developer expertise
SQL