Hướng dẫn check folder exist php

I want to create a directory if it does not exist already.

Is using the is_dir function enough for that purpose?

if [ !is_dir[ $dir ] ] {
    mkdir[ $dir ];       
}

Or should I combine is_dir with file_exists?

if [ !file_exists[ $dir ] && !is_dir[ $dir ] ] {
    mkdir[ $dir ];       
} 

asked Mar 24, 2011 at 21:38

6

Both would return true on Unix systems - in Unix everything is a file, including directories. But to test if that name is taken, you should check both. There might be a regular file named 'foo', which would prevent you from creating a directory name 'foo'.

answered Mar 24, 2011 at 21:42

Marc BMarc B

351k42 gold badges402 silver badges486 bronze badges

3

$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.";
}

nickb

58.5k12 gold badges102 silver badges141 bronze badges

answered Jun 8, 2011 at 10:50

MaherMaher

1,5091 gold badge9 silver badges2 bronze badges

7

I think realpath[] may be the best way to validate if a path exist //www.php.net/realpath

Here is an example function: