As shown in the picture, it is an encapsulated PDO operation, sending sql and retrieving data!
Picture description
A sql statement uses bindColumn() of pdo to implement a like query
Option parameters
Error conditions
Indirect error, luckily it can run normally, the connection is mysql installed by myself on Alibaba Cloud, my personal blog runs normally, but I don’t know why the pdo query written by me reported an error
I have searched many times on the Internet
1. It cannot be that timeout has been set
2.max_allowed_packet is also set to 32M