[PHP ERROR] PHP notice:unserialize (): Error at offset by bytes in on line solution

This error was encountered when storing data to the database using the Unserialize function .

It was later discovered that after converting gb2312 to utf-8 format,

The number of bytes per Chinese has been increased from 2 to 3, resulting in the problem of determining the length of the character after deserialization.

So you need to recalculate the value of the character length in the serialized array using a regular expression, with the following code:

function mb_unserialize ($serial _str) {    $outpreg_replace$ Serial_str  );     return unserialize ($out);}