What are the characteristics of the mkdir function in P…

The mkdir function is used to create directories and has the following characteristics:

1. Create a directory: the mkdir function allows you to create a new directory.
2. Recursively create: the mkdir function can create multiple levels of directories recursively. If the parent directory of the directory being created does not exist, the mkdir function will automatically create the parent directory.
3. Permission settings: The mkdir function can be used to set the permissions of the directory being created. The directory permissions can be specified using the chmod parameter, with the default being 0755.
4. Return value: The mkdir function will return a boolean value indicating whether the directory was successfully created. It will return true if successful and false if not successful.
5. Error handling: If the mkdir function fails to create a directory, detailed error information can be obtained using the error_get_last function.
6. If the directory to be created already exists, the mkdir function will return false and perform no operation.
7. Path processing: the mkdir function can create directories with special characters in the name, such as spaces and Chinese characters.
8. The mkdir function can create directories on different types of file systems, such as NTFS and FAT32.

It is important to note that in certain situations, the mkdir function may fail to create a directory due to insufficient permissions or other reasons, so error handling should be implemented in the code.