How to solve the problem of php mkdir failure

Solution to the failure of php mkdir: First find the "/etc/bashrc" configuration file; then modify the permissions through "mkdir('test', 0777);chmod('test', 0777);" .

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php mkdir 777 failed

In the Linux system, there is a default permission when creating files/folders. This permission is affected by the umask setting. In the /etc/bashrc configuration file, we can find the following configuration:

This is explained here The problem is that the default umask in the Linux system is 022. After calculation with our 777 &, it becomes 755. This is the reason.

Solution:

mkdir('test', 0777);
chmod('test', 0777);

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