using is_readable() with arrays??

[loco41211]

I can't work out how to use is_readable with an array of directories. Could anyone explain for me place how I could make this work?

foreach ($users as $user) {
$usernames[] = $user['username'];
$homedirs[] = $user['home_dir'];
}


if (($usernames!="")) {
if (is_readable($homedirs)) {
array_push($path_to_public,$homedirs); 
} 
}

 

I get the error:

Notice: Array to string conversion

 

Appreciate any help thank you in advace.