PHP Warning: mysqli_query(): (HY000/2006): Solution to MySQL server has gone away

In the process of using PHP to connect to MySQL, you may sometimes face the error message "PHP Warning: mysqli_query(): (HY000/2006): MySQL server has gone away". This error message means that the MySQL server has been shut down or the connection has been lost, causing PHP to be unable to connect to the MySQL database.

The reasons for this error may be many, such as excessive server load, improper MySQL configuration, network problems, etc. To solve this problem, we need to find the root cause of the problem and then take appropriate measures.

The following are some possible solutions:

1. Increase the timeout waiting time

By modifying the configuration file of the MySQL server, change the wait_timeout and interactive_timeout parameters. Increasing the value can increase the communication waiting time between the MySQL server and PHP and reduce the possibility of this error. For example: wait_timeout=1800 Interactive_timeout=1800.

2. Optimize database connection and query methods

Using connection methods such as mysqli or PDO can improve the stability and performance of MySQL. At the same time, using reasonable query statements can also reduce server load and MySQL connection errors.

3. Solve network problems

If this error message appears, it is most likely caused by network problems. You can try to check the connection status of the network and server, and solve problems such as network jitter and congestion.

4. Upgrade MySQL version

If this error message appears, sometimes it may be because the MySQL version is too old or there are some known problems. You can try to upgrade the MySQL version, or use some stable version.

In general, the error message PHP Warning: mysqli_query(): (HY000/2006): MySQL server has gone away is a relatively common problem, which is probably due to server load, MySQL configuration, network, etc. Caused by. It is necessary to understand the usage and configuration of the server and take appropriate methods to solve the problem to make the system more stable and reliable.

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