1: <?php
 2: class Horde_Date_Parser_Locale_Base_Ordinal
 3: {
 4:     public $ordinalRegex = '/^(\d*)(st|nd|rd|th)$/';
 5:     public $ordinalDayRegex = '/^(\d*)(st|nd|rd|th)$/';
 6: 
 7:     public function scan($tokens)
 8:     {
 9:         foreach ($tokens as &$token) {
10:             if (!is_null($t = $this->scanForOrdinals($token))) {
11:                 $token->tag('ordinal', $t);
12:             }
13:             if (!is_null($t = $this->scanForDays($token))) {
14:                 $token->tag('ordinal_day', $t);
15:             }
16:         }
17: 
18:         return $tokens;
19:     }
20: 
21:     public function scanForOrdinals($token)
22:     {
23:         if (preg_match($this->ordinalRegex, $token->word, $matches)) {
24:             return (int)$matches[1];
25:         }
26:     }
27: 
28:     public function scanForDays($token)
29:     {
30:         if (preg_match($this->ordinalDayRegex, $token->word, $matches)) {
31:             if ($matches[1] <= 31) {
32:                 return (int)$matches[1];
33:             }
34:         }
35:     }
36: 
37: }
38: