Zblog Upgrade 1.7 Error "Invalid argument supplied for foreach" or "unserialize(): Error at offset" Solution

zblog The official version 1.7 was released on April 10, 2021（ https://blog.zblogcn.com/2021/04/10/122/ ）Unexpectedly, many users reported various errors after the first upgrade, and the forum howled:

Most of the error reporting prompts are "Invalid argument supplied for foreach" and "unserialize(): Error at offset". This article will share the causes and solutions of this bug.

BUG reason:

In version 1.7 of zblog, the config table of the system has been modified. This table stores the core contents of the program, such as domain name , language version website Name, etc. Because there are too many contents to be called in one field, it is not convenient. In version 1.7 of zblog, this field is forcibly separated. In order to be compatible with old users, the data of old users must be processed.

The problem lies in the data processing of this old user. A problem with a function that serializes data causes this bug.

BUG solution:

Users who report the above two errors in Upgrade 1.7 can download the latest“ zblog1.7 2915 ”In the resource package, find the "zb_system/function/lib/config. php" file and replace the file on your website to solve the problem.

This website also uploaded a“ config.php ”Files, direct Click Download Replace it.