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i have zencart on 1.3.8a version. now i wish to upgrade it to version 1.5.x .<br />
please help me with proper solution.
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i have zencart on 1.3.8a version. now i wish to upgrade it to version 1.5.x .
please help me with proper solution.

upgrade zencart 1.3.8a to 1.5.x version

Electronic commerce (e-commerce) is the trading in products or services using computer networks, such as the Internet. E-commerce draws on technologies such as mobile commerce, electronic funds transfer (EFT), supply chain management, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems. Use this topic to discuss online shopping carts, online marketplaces, and e-commerce platforms.

E-Commerce

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.