How does PHP determine if the mapping directory exists?

How does PHP determine if the mapping directory exists?
If present, how to get the size and modification time of this directory

Directory for (\\apguds\note\x-section\05C62\) Start running can be opened directly
Do not know the code in PHP for this path is how to write, tried for a long while unsuccessful

Reply to discussion (solution)

Do you need password access to this mapping directory?

 
  Nul 2>&1 "); $dir = $letter.":/"; /Check The Directoryif (Is_dir ($dir) && is_readable ($dir)) {    //Get directory size}

Do you need password access to this mapping directory?

 
  Nul 2>&1 "); $dir = $letter.":/"; /Check The Directoryif (Is_dir ($dir) && is_readable ($dir)) {    //Get directory size}

I do not use the password, can be opened directly, now is to want to know how to determine whether it exists, because it is the operation of the sub-directory
Then exist to get the directory size and modification time
Thank you.

Well, then you can use it.

 
  Nul 2>&1 "); $dir = $letter. ":/"; Check the Directoryif (Is_dir ($dir) && is_readable ($dir)) {    //Get directory size}

Still no use, do you want to create a mapping disk? My computer does not seem to have this (after the run has not created all), I am directly after running the input can be opened

 
  Nul 2>&1 "); $dir = $letter. ":/"; Check the Directoryif (Is_dir ($dir) && is_readable ($dir)) {    echo ' directory exists ';} else{  echo ' directory does not exist ';}? >

This directory is present, but the output does not exist, and how to get the size and date when the other is present.

Look down.

Do not know why, I use this or not, has been solved in another way,
Thank you for your continued attention to the technical support, hope that the community more enthusiastic people like you

