Created
May 13, 2014 22:50
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Getting default language in PHP
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| <?php | |
| class LanguageDetector { | |
| static public function parse($sAcceptLanguage) { | |
| $parts = array_map('trim', explode(',', $sAcceptLanguage)); | |
| foreach ($parts as &$part) { | |
| $part = explode(';', $part); | |
| $weight = (array_key_exists(1, $part) ? (float) substr($part[1], 2) : 1); | |
| preg_match_all(self::getBCP47RegEx(), $part[0], $part); | |
| foreach (array_keys($part) as $k) { | |
| if(is_int($k)) unset($part[$k]); | |
| else $part[$k] = $part[$k][0]; | |
| } | |
| $part['weight'] = $weight; | |
| } | |
| uasort($parts, function($a, $b) { | |
| return ($a['weight'] == $b['weight'] ? 0 : ($a['weight'] < $b['weight'] ? 1 : -1)); // -1 and 1 reversed, since we want to sort DESC, not ASC | |
| }); | |
| return $parts; | |
| } | |
| static private function getBCP47RegEx() { | |
| $regular = 'art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|zh-min|zh-min-nan|zh-xiang'; | |
| $irregular = 'en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE'; | |
| $grandfathered = $irregular.'|'.$regular; | |
| $privateuse = 'x(?:-[a-z0-9]{1,8})+'; | |
| $singleton = '[a-wy-z0-9]'; | |
| $extension = $singleton.'(?:-[a-z0-9]{2,8})+'; | |
| $variant = '[a-z0-9]{5,8}|\d[a-z0-9]{3}'; | |
| $region = '[a-z]{2}|\d{3}'; | |
| $script = '[a-z]{4}'; | |
| $extlang = '[a-z]{3}(?:-[a-z]{3}){,2}'; | |
| $language = '[a-z]{2,3}(?P<extlang>'.$extlang.')?|[a-z]{4}|[a-z]{5,8}'; | |
| $langtag = '(?P<language>'.$language.')'.'(?:-(?P<script>'.$script.'))?'.'(?:-(?P<region>'.$region.'))?'.'(?:-(?P<variant>'.$variant.'))*'.'(?:-(?P<extension>'.$extension.'))*'.'(?:-(?P<privuse>'.$privateuse.'))?'; | |
| $languagetag = '(?P<langtag>'.$langtag.')|'.'(?P<privateuse>'.$privateuse.')|'.'(?P<grandfathered>'.$grandfathered.')'; | |
| return '#'.$languagetag.'#i'; | |
| } | |
| } | |
| ?> | |
| <h1>Language request tester</h1> | |
| <h2>In order, the requested languages are:</h2> | |
| <ul> | |
| <?php foreach (LanguageDetector::parse($_SERVER['HTTP_ACCEPT_LANGUAGE']) as $lang) { ?> | |
| <li>Language: <?=$lang['language']?> <?= $lang['region'] ? 'for region '.$lang['region'] : '' ?></li> | |
| <?php } ?> | |
| </ul> | |
| <p>Further information and reading: | |
| <ul> | |
| <li><a href="http://www.w3.org/International/questions/qa-accept-lang-locales" target="_blank">http://www.w3.org/International/questions/qa-accept-lang-locales</a></li> | |
| </ul> | |
| </p> |
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