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Question

How to test if a directory already exist in PHP?

Answer 1

+2 A:

Try this:

$filename = "/tmp";
if (!file_exists($filename))
    echo $filename, " does not exist";
elseif (!is_dir($filename))
    echo $filename, " is not a directory";
else
    echo "Directory ", $filename, " already exists";

file_exists checks if the path/file exists and is_dir checks whether the given filename is a directory.

Edit:

to create the directory afterwards, call

mkdir($filename);

Cassy 2010-01-22 14:18:48

The call to file_exists(...) is not necessary. is_dir(...) will return false if it does not exist.

Mike 2010-01-22 14:22:51

I would say the same, but he said 'is_dir doesnt work for me'

DaNieL 2010-01-22 14:24:17

`file_exists` should be called anyway if the next step is to create a directory with the given name. If there was a file named exactly like the target directory, a call to `mkdir` would fail although the "directory" was not there...

Cassy 2010-01-22 14:25:05

Yeah unfortunatly but i dont know why is_dir doesnt work i got no errors nothing nmnor the dir is created

streetparade 2010-01-22 14:25:15

@Mike: True, but this way you know which condition (doesn't exist or isn't a directory) led to the false return value.

GreenMatt 2010-01-22 14:27:35

i forgot to set mkdir to true like this mkdir($mydir,0655,true);

streetparade 2010-01-22 14:27:53

@streetparade: Have you tried running this from the command line? If you're running via the web, have you checked the web server error logs?

GreenMatt 2010-01-22 14:28:54

Thanks for the help

streetparade 2010-01-22 14:28:49

Answer 2

+1 A:

Try this:

$dir = "/path/to/dir";
if(is_dir($dir) == false)
    mkdir($dir);

If you want the complete path the be created (if not present), set recusive parameter to true.

See documentation of mkdir for more information.

Veger 2010-01-22 14:25:22

You were faster then me. :)

John Conde 2010-01-22 14:27:03

Answer 3

+1 A:

To expand on the answer above based on the questioner's comments:

$filename = "/tmp";
if (!is_dir($filename)) {
    mkdir($filename);
}

You need to use mkdir() to actually make the directory.

John Conde 2010-01-22 14:26:37

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How to test if a directory already exist in PHP?

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