Usage:
mkdir(path,mode,recursive,context)
Parameter Description
path required. Specifies the name of the directory to be created.
mode required. Specify permissions. The default is 0777.
recursive Required. Specifies whether to set recursive mode.
context required. Specifies the environment for a file handle. Context is a set of options that modify the behavior of the stream.
mkdir() attempts to create a new directory specified by path.
The default mode is 0777, which means the greatest possible access.
mkdir("something");
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