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Teacher, I followed your operation step by step. When it comes to encapsulating the database access class, the web page prompts: Page error, please try again later!
I assign simple numbers to $res and it can be displayed normally.
小明2018-12-05 19:27:42
Try to enable debug first to see what went wrong
My error is syntax error: unexpected 'return' (T_RETURN) php version is 5.5.38
