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author Tom Fredrik Blenning <bfg@bfgconsult.no>
date Mon, 23 Jan 2023 00:17:36 +0100
parents b6b4a58c7625
children
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d2da64705bce Refactored everything in the CMS into this repos.
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1 <?php
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2 /**
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3 * Functionality for determining language use
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4 */
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5 class Language {
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6 /**
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7 * Extracts the accepted languages from the GET query, sorted by
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8 * preference(q-value).
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9 *
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10 * @return associative array of language codes with q value
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11 */
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12 static function accepted() {
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13 $langs = array();
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15 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
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16 // break up string into pieces (languages and q factors)
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17 preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
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18
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19 if (count($lang_parse[1])) {
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20 // create a list like "en" => 0.8
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21 $langs = array_combine($lang_parse[1], $lang_parse[4]);
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22
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23 // set default to 1 for any without q factor
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24 foreach ($langs as $lang => $val) {
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25 if ($val === '') $langs[$lang] = 1;
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26 }
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28 // sort list based on value
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29 arsort($langs, SORT_NUMERIC);
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30 }
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31 }
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32 return $langs;
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33 }
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35 /**
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36 * From the list of desired languages, pick the best which we can serve.
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37 *
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38 * @param $default what to choose if no match could be found.
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39 */
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40 static function prefer($default)
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41 {
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42 $language = $default;
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43 $langs = self::accepted();
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44 if ($langs) {
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45 foreach ($langs as $l => $val) {
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46 if (file_exists($l)) {
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47 $language = $l;
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48 break;
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49 }
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50 }
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51 }
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52 return $language;
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53 }
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54 }
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55 ?>