PHP cannot verify if directory exists

Question

I am going crazy with this one

I have this folders and files structure

/
- /projects
  - /mytest
    - /install
      - /index.php
    - /product
- /resources

So, inside my install/index.php file I am trying to verify if /product folder does exist. I know that the folder exists, but looks like PHP doesn't. My code:

if(file_exists('../../mytest/product') && is_dir('../../mytest/product')) {
    echo 'Folder exists!';
} else {
    echo 'PHP is blind or something!';
}

Maybe I am very tired, but I just cannot figure out what is wrong. Some rested minds here maybe will see the problem. Thanks!

Don't forget about directory permissions. PHP may simply not see that directory. — cypher
– cypher, Commented Jun 4, 2012 at 22:40
Run clearstatcache() since the result of these functions are stored in the stat cache. — nathancahill
– nathancahill, Commented Jun 4, 2012 at 22:41
Are you running this php file locally or as an http request? The latter can mess with how the directories are viewed, and how permissions are read. — Nathaniel Ford
– Nathaniel Ford, Commented Jun 4, 2012 at 22:45

Zuul · Accepted Answer · 2012-06-04 23:02:06Z

With your current directory structure:

/
    /projects
        /mytest
            /install
                /index.php
            /product
    /resources

The following code works just fine:

<?php
if(file_exists('../product') && is_dir('../product')) {
    echo 'Folder exists!';
} else {
    echo 'PHP is blind or something!';
}
?>

As does your current code:

<?php
if(file_exists('../../mytest/product') && is_dir('../../mytest/product')) {
    echo 'Folder exists!';
} else {
    echo 'PHP is blind or something!';
}
?>

Both solutions outputted "Folder exists!", so the issue is related with folder permissions.

You need to confirm:

Owner for that folder

Remember that the owner of the directory has to be the same of the script user, otherwise this function will always return false when PHP is running in safe_mode..

open_basedir

Limit the files that can be opened by PHP to the specified directory-tree..

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