class Utils
{
/**
- * Generate a token used for RSS
+ * Generate a token used for RSS.
+ *
+ * @param int $length Length of the token
*
* @return string
*/
- public static function generateToken()
+ public static function generateToken($length = 15)
{
- if (ini_get('open_basedir') === '') {
- if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
- // alternative to /dev/urandom for Windows
- $token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
- } else {
- $token = substr(base64_encode(file_get_contents('/dev/urandom', false, null, 0, 20)), 0, 15);
- }
- } else {
- $token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
- }
+ $token = substr(base64_encode(random_bytes($length)), 0, $length);
+
+ // remove character which can broken the url
+ return str_replace(['+', '/'], '', $token);
+ }
- return str_replace('+', '', $token);
+ /**
+ * For a given text, we calculate reading time for an article
+ * based on 200 words per minute.
+ *
+ * @param $text
+ *
+ * @return float
+ */
+ public static function getReadingTime($text)
+ {
+ return floor(count(preg_split('~[^\p{L}\p{N}\']+~u', strip_tags($text))) / 200);
}
}