Zen Cart 1.5.6
Initial Release Date: 10 Dec 2018
Zen Cart 1.5.6 is the latest release of Zen Cart. It includes database changes from the 1.5.5 branch, which is why the minor version number was bumped.
The biggest change in 1.5.6 is PHP 7 compatibility.
Zen Cart 1.5.6c works well with PHP 7.3.
Zen Cart 1.5.6b works well with PHP 7.2.
Zen Cart 1.5.6a works well with PHP 7.1.