src/Wallabag/CoreBundle/Tools/Utils.php

   1 <?php
   2
   3 namespace Wallabag\CoreBundle\Tools;
   4
   5 class Utils
   6 {
   7     /**
   8      * Generate a token used for RSS.
   9      *
  10      * @return string
  11      */
  12     public static function generateToken()
  13     {
  14         if (ini_get('open_basedir') === '') {
  15             if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
  16                 // alternative to /dev/urandom for Windows
  17                 $token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
  18             } else {
  19                 $token = substr(base64_encode(file_get_contents('/dev/urandom', false, null, 0, 20)), 0, 15);
  20             }
  21         } else {
  22             $token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
  23         }
  24
  25         // remove character which can broken the url
  26         return str_replace(array('+', '/'), '', $token);
  27     }
  28
  29     /**
  30      * @param $words
  31      * @return float
  32      */
  33     public static function convertWordsToMinutes($words)
  34     {
  35         return floor($words / 200);
  36     }
  37
  38     /**
  39      * For a given text, we calculate reading time for an article
  40      * based on 200 words per minute.
  41      *
  42      * @param $text
  43      *
  44      * @return float
  45      */
  46     public static function getReadingTime($text)
  47     {
  48         return self::convertWordsToMinutes(str_word_count(strip_tags($text)));
  49     }
  50 }