Discovers a writable system-appropriate temporary directory.
mixed A string containing the path to the temporary directory.
function file_directory_os_temp() {
$directories = array();
// Has PHP been set with an upload_tmp_dir?
if (ini_get('upload_tmp_dir')) {
$directories[] = ini_get('upload_tmp_dir');
}
// Operating system specific dirs.
if (substr(PHP_OS, 0, 3) == 'WIN') {
$directories[] = 'c:\\windows\\temp';
$directories[] = 'c:\\winnt\\temp';
}
else {
$directories[] = '/tmp';
}
// PHP may be able to find an alternative tmp directory.
$directories[] = sys_get_temp_dir();
foreach ($directories as $directory) {
if (is_dir($directory) && is_writable($directory)) {
return $directory;
}
}
return FALSE;
}