Why can't php execute the mysql command line? Cause Analysis

If you try to run the MySQL command line in a PHP program but fail, you may encounter the following error message:

sh: mysql: command not found

or:

sh: 1: mysql: not found

If you encounter this The problem is most likely caused by the following reasons.

Environment variable problem

The installation path of MySQL may not be added to the system's environment variables. On a Linux system, you can view the location of MySQL through the following command:

which mysql

If the output result is empty, it means that MySQL has not been added to the environment variable.

PHP and MySQL have different paths

You may use absolute paths in the PHP program to call the MySQL command line, but the actual situation is that MySQL The path is different from PHP. At this point you need to modify the PHP program to use the correct path.

MySQL is not installed correctly

Finally, it is also possible that MySQL is not installed correctly. In this case, you should reinstall MySQL and make sure it runs correctly.

The above are several reasons that may cause PHP to be unable to execute the MySQL command line. If you encounter such a problem, you can solve it through the above methods.

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