How do I check if a directory exists? “is_dir”, “file_exists” or both?

Question

I want to create a directory if it does\'nt exist already.

Is using is_dir enough for that purpose?

if ( !is_dir( $dir ) ) {
    mkdir(          


        

Answer 1

$dirname = $_POST["search"];
$filename = "/folder/" . $dirname . "/";

if (!file_exists($filename)) {
    mkdir("folder/" . $dirname, 0777);
    echo "The directory $dirname was successfully created.";
    exit;
} else {
    echo "The directory $dirname exists.";
}