About the pitfalls encountered by PHP Shell_exec

Because you need to use shell_exec to execute python scripts in the project, under test shell_exec("test.py") can run normally without errors, but adding a directory shell_exec("python/test.py") will not work. Use For the PHP framework, I initially thought that the reason was PHP's directory limitation, but after trying to no avail, I found that it was not a directory problem.

So I thought maybe the shell_exec command does not support directories? A word awakened the dreamer, shell_exec is equivalent to command line execution

The code can be changed from the original

to the following picture, which is a perfect solution.

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