PHP basic exercises--directory operations_PHP tutorial

php basic exercises - directory traversal:

("content-type:text/html;charset=utf-8" = "./final/factapplication" listdir( = ( ( !== ( = ( = .'/'. ( != '.' && != '..' (( ."
>(); listdir

Core: Classic applications of recursion, as well as basic operations on files and directories.

= "../fileupload" = "b" copydir(, ( = ( ( !== ( = ( = ."/". = ."/". ( != "." && != ".." ((, (, (, ); copydir

Core: copy function.

= 'a' deldir( = ( ( !== ( = ( = .'/'.( != '.' && != '..' (((( (); deldir

Core: Note that unlink deletes the file with path.

= "a" dirsize( = ( ( !== ( = ( = .'/'. ( != '.' && != '..'(( = + ( ( dirsize(); dirsize

Core: Understand recursive functions by determining where $tot returns.

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