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PHP check to see if a folder exists

<?php
    $dirname = $_POST["DirectoryName"];
    $filename = ("/folder/" . "$dirname" . "/");
 
    if (file_exists($filename)) {
        echo "The directory $dirname exists";
    } else {
        mkdir("folder/" . "$dirname", 0777);
        echo "The directory $dirname was successfully created.";
    }
?>
 

I don't think $dirname needs to be in quotes on several lines.

reply to SychoSly
As mentioned, variables shouldn't be in quotes. There's also an easier way to use variables in a string, use curlys:

<?php  
    $dirname = $_POST["DirectoryName"];  
    $filename = "/folder/{$dirname}/";  
   
    if (file_exists($filename)) {  
        echo "The directory {$dirname} exists";  
    } else {  
        mkdir("folder/{$dirname}", 0777);  
        echo "The directory {$dirname} was successfully created.";  
    }  
?>  
 

So now the script runs, thank you very much.

I am now having a different problem. When I run the script now and I create a directory that doesn't exist. I get the "The directory mydirectory was successfully created", so it seems like the "if" part of the loop works.

When I go back and I recreate the same directory to see if my loop works I get the PHP error stating that the file exists and then the line stating the directory was successfully created. So it looks like it goes into the else part and it bypasses the "if" part.

I then tried swapping the code in the loop so that the "if" part does creates the directory and then the else part says it is created. I get no directory created. So it seems like the if part is not running only whatever is in the else.

Hope that makes sense. Any ideas?

Re: PHP check to see if a folder exists

Thanks for the help. It seems to be working now.