validation in folder

[RickyD77]

what i need is to check if a file exit in a folder

$file=page.php
validation
if ($file exit in /folder/)
{ do this
}else
{do that
}

i just dont know how to check if a file was in the folder...

thanks eric

[JakesSA]

is_dir() or file_exists() depending if you want to go boolean or not