PHP Library (JS) for Web to allow to use the camera of a mobile phone (Android & IOS) to scan a barcode image (QR, EAN, Code 39, etc.)

I need a library (PHP or JS) for use with PHP in a Web Page to read barcodes using a mobile phone (Android & IPhone). The barcode should be read in a field of the web formulary. With this id code the sample should connect to mysql database extract information and show it in the web template… (Budget: $250 – $750 USD, Jobs: Android, iPhone, Javascript, Mobile App Development, PHP)


Deck load Capacity. Structural engineer?

Hello, I have a deck and want to know how much weight it can support. I built the deck a few years ago and it was done with 2x10x16’s clear spanned a 16’ distance. There is a ledger board secured to the house and joist hangers on both ends of each 2×10… (Budget: $10 – $30 USD, Jobs: AutoCAD, Building Architecture, CAD/CAM, Civil Engineering, Structural Engineering)