Question

The function below returns an array of XML files from a given directory including all subdirectories. How can I modify this function by passing a second optional parameter which excludes a directory.

E.g: 
getDirXmlFiles($config_dir, "example2");

Directory/Files
    /file1.xml
    /file2.xml
    /examples/file3.xml
    /examples/file4.xml
    /example2/file5.xml
    /example2/file5.xml

In the above case the function would return all files except files in the example2 directory.

function getDirXmlFiles($base) {        

    $files = array();       
    if(!is_dir($base)) return $files;

    if ($handle = opendir($base)) {
        while (false !== ($file = readdir($handle))) {
            if ($file == "." || $file == "..") continue;

            if(is_dir("$base/$file")) {                 
                $subfiles = $this->getDirXmlFiles("$base/$file");
                $files = array_merge($files, $subfiles);                    
            } else {                    
                if(Cms_File::type($file,false) == "xml") 
                    $files[] = "$base/$file";
            }
        }
        closedir($handle);
    }
    return $files;
}

Answer 1

Redefine the function inputs:

function getDirXmlFiles($base, $excludeDir) { 

Then change this line:

if(is_dir("$base/$file")) { 

to this:

if(is_dir("$base/$file") && "$base/$file" != "$base/$excludeDir") {