How to Fix the "MySQL server has gone away" Error in PDO?

Troubleshooting "MySQL server has gone away" Error in PDO

In a script that executes a series of prepared statements using PDO, users may encounter the "MySQL server has gone away" error. This issue arises when packets sent to the server exceed the allowed maximum size.

Cause:

The error indicates that the client sent a packet that is larger than the maximum allowed packet size configured on the server. This typically occurs when inserting large BLOBs (binary large objects) that exceed the limit.

Solution:

To resolve this issue, adjust the server's max_allowed_packet setting in my.ini to accommodate the size of the largest BLOB that will be inserted. For instance, set max_allowed_packet to 200 megabytes to allow for large binary data insertion:

[mysqld]
...
max_allowed_packet = 200M
...

By updating this setting, the server can handle packets exceeding the previous limit. Ensure that the value specified in max_allowed_packet is appropriate for your application's data requirements.

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