1: <?php
 2: /**
 3:  * WsLocalize
 4:  * Translates strings in application to specific language. Create language text
 5:  * file in "lang" directory. Language file is in JSON format. For example:
 6:  * create "lang/hr.txt" file for croatian translations, with example content:
 7:  * <code>
 8:  * {
 9:  *      'message string':'prva poruka',
10:  *      'message string2':'druga poruka'
11:  * }
12:  * </code>
13:  *
14:  * Example usage:
15:  *
16:  * <code>
17:  * // this will display "prva poruka" if browser language is set to croatian
18:  * echo WsLocalize::msg('message string');
19:  * </code>
20:  *
21:  */
22: class WsLocalize
23: {
24:     public static function msg($str)
25:     {
26:         /* translation file
27:          * (static is used for ensure only one loading of file)
28:          */
29:         static $translations = NULL;
30: 
31:         if (is_null($translations)) {
32:             // language
33:             $lang = substr(
34:                 filter_input(INPUT_SERVER, 'HTTP_ACCEPT_LANGUAGE'),
35:                 0,
36:                 2
37:             );
38: 
39:             // language file
40:             $lang_file = WsROOT.'/lang/'.$lang.'.txt';
41: 
42:             // load default language file if specific language don't exist
43:             if (!file_exists($lang_file)) {
44:                 // no translation file found; return unchanged message
45:                 return $str;
46:             }
47: 
48:             /* Load the language file as a JSON object and transform it into
49:              * an associative array
50:              */
51:             $lang_file_content = file_get_contents($lang_file);
52:             $translations = json_decode($lang_file_content, true);
53:         }
54:         
55:         if (!empty($translations[$str])) {
56:             return $translations[$str];
57:         } else {
58:             return $str;
59:         }
60:     }
61: 
62: 
63:     /**
64:      * get current language
65:      *
66:      * @return string $lang
67:      *
68:      */
69:     public static function getLang()
70:     {
71:         $lang = substr(
72:             filter_input(INPUT_SERVER, 'HTTP_ACCEPT_LANGUAGE',
73:                 FILTER_SANITIZE_STRING), 0, 2);
74: 
75:         return($lang);
76:     }
77: }
78: 
79: