public function deleteFile($additionalPath = '')
    {
        $path = $this->testPath($this->realPath($additionalPath));
        
        if ($path === false) {
            return false;
        }
        
        return unlink($path);
    }
public function deleteFile($additionalPath = '')
    {
        $path = $this->testPath($this->realPath($additionalPath));
        
        if ($path === false) {
            return false;
        }
        
        return unlink($path);
    }
public function deleteFile ( $ additionalPath = '' ) { $ path = $ this -> testPath ( $ this -> realPath ( $ additionalPath ) ) ; if ( $ path === false ) { return false ; } return unlink ( $ path ) ; }
Deletes a file on the hard disk.

@access public
@param string $additionalPath
@return boolean
Deletes a file on the hard disk .