JayBizzle / Crawler-Detect

src/CrawlerDetect.php

Indentation +509 added lines, -509 removed lines

@@ -4,528 +4,528 @@
 
 class CrawlerDetect
 {
-    protected $userAgent = null;
+	protected $userAgent = null;
 
-    protected $httpHeaders = array();
+	protected $httpHeaders = array();
 
-    protected $matches = array();
+	protected $matches = array();
 
-    protected static $crawlers = array(
-        '007ac9 Crawler',
-        '008\\/',
-        '360Spider',
-        'A6-Indexer',
-        'ABACHOBot',
-        'AbiLogicBot',
-        'Aboundex',
-        'Accoona-AI-Agent',
-        'acoon',
-        'AddSugarSpiderBot',
-        'AddThis',
-        'Adidxbot',
-        'ADmantX',
-        'AdvBot',
-        'AHC',
-        'ahrefsbot',
-        'aihitbot',
-        'Airmail',
-        'AISearchBot',
-        'Anemone',
-        'antibot',
-        'AnyApexBot',
-        'Applebot',
-        'arabot',
-        'Arachmo',
-        'archive-com',
-        'archive\.org_bot',
-        'B-l-i-t-z-B-O-T',
-        'backlinkcrawler',
-        'baiduspider',
-        'BecomeBot',
-        'BeslistBot',
-        'bibnum\.bnf',
-        'biglotron',
-        'BillyBobBot',
-        'Bimbot',
-        'bingbot',
-        'binlar',
-        'blekkobot',
-        'blexbot',
-        'BlitzBOT',
-        'bl\.uk_lddc_bot',
-        'bnf\.fr_bot',
-        'boitho\.com-dc',
-        'boitho\.com-robot',
-        'brainobot',
-        'btbot',
-        'BUbiNG',
-        'Butterfly\\/',
-        'buzzbot',
-        'BuzzSumo',
-        'careerbot',
-        'CatchBot',
-        'CC Metadata Scaper',
-        'ccbot',
-        'Cerberian Drtrs',
-        'changedetection',
-        'Charlotte',
-        'clips\.ua\.ac\.be',
-        'CloudFlare-AlwaysOnline',
-        'citeseerxbot',
-        'coccoc',
-        'classbot',
-        'Commons-HttpClient',
-        'content crawler spider',
-        'Content Crawler',
-        'convera',
-        'ConveraCrawler',
-        'CoPubbot',
-        'cosmos',
-        'Covario-IDS',
-        'CrawlBot',
-        'crawler4j',
-        'CrystalSemanticsBot',
-        'curl',
-        'cXensebot',
-        'CyberPatrol',
-        'DataparkSearch',
-        'dataprovider',
-        'DiamondBot',
-        'Digg',
-        'discobot',
-        'DomainAppender',
-        'domaincrawler',
-        'Domain Re-Animator Bot',
-        'dotbot',
-        'drupact',
-        'DuckDuckBot',
-        'EARTHCOM',
-        'EasouSpider',
-        'ec2linkfinder',
-        'edisterbot',
-        'ElectricMonk',
-        'elisabot',
-        'emailmarketingrobot',
-        'Embedly',
-        'EmeraldShield\.com WebBot',
-        'envolk\[ITS\]spider',
-        'EsperanzaBot',
-        'europarchive\.org',
-        'EventMachine HttpClient',
-        'exabot',
-        'ezooms',
-        'facebookexternalhit',
-        'Facebot',
-        'FAST Enteprise Crawler',
-        'FAST Enterprise Crawler',
-        'FAST-WebCrawler',
-        'FDSE robot',
-        'Feedfetcher-Google',
-        'FeedValidator',
-        'FindLinks',
-        'findlink',
-        'findthatfile',
-        'findxbot',
-        'Flamingo_SearchEngine',
-        'fluffy',
-        'fr-crawler',
-        'FRCrawler',
-        'FurlBot',
-        'FyberSpider',
-        'g00g1e\.net',
-        'GigablastOpenSource',
-        'grub-client',
-        'g2crawler',
-        'Gaisbot',
-        'GalaxyBot',
-        'genieBot',
-        'Genieo',
-        'GermCrawler',
-        'getprismatic\.com',
-        'gigabot',
-        'GingerCrawler',
-        'Girafabot',
-        'Gluten Free Crawler',
-        'gnam gnam spider',
-        'Go-http-client',
-        'Googlebot-Image',
-        'Googlebot-Mobile',
-        'Googlebot',
-        'Google-HTTP-Java-Client',
-        'Google favicon',
-        'GrapeshotCrawler',
-        'gslfbot',
-        'GurujiBot',
-        'HappyFunBot',
-        'Healthbot',
-        'heritrix',
-        'hl_ftien_spider',
-        'Holmes',
-        'htdig',
-        'httpunit',
-        'httrack',
-        'ia_archiver',
-        'iaskspider',
-        'iCCrawler',
-        'ichiro',
-        'igdeSpyder',
-        'iisbot',
-        'InAGist',
-        'InfoWizards Reciprocal Link System PRO',
-        'Insitesbot',
-        'integromedb',
-        'intelium_bot',
-        'InterfaxScanBot',
-        'IODC',
-        'IOI',
-        'ip-web-crawler\.com',
-        'ips-agent',
-        'IRLbot',
-        'IssueCrawler',
-        'IstellaBot',
-        'it2media-domain-crawler',
-        'iZSearch',
-        'Jaxified Bot',
-        'JOC Web Spider',
-        'jyxobot',
-        'KoepaBot',
-        'L\.webis',
-        'LapozzBot',
-        'Larbin',
-        'lb-spider',
-        'LDSpider',
-        'LexxeBot',
-        'libwww',
-        'Linguee Bot',
-        'Link Valet',
-        'linkdex',
-        'LinkExaminer',
-        'LinksManager\.com_bot',
-        'LinkpadBot',
-        'LinksCrawler',
-        'LinkWalker',
-        'Lipperhey Link Explorer',
-        'Lipperhey SEO Service',
-        'Livelapbot',
-        'LongURL API',
-        'lmspider',
-        'lssbot',
-        'lssrocketcrawler',
-        'ltx71',
-        'lufsbot',
-        'lwp-trivial',
-        'Mail\.RU_Bot',
-        'MegaIndex\.ru',
-        'mabontland',
-        'magpie-crawler',
-        'MagpieRSS',
-        'Mediapartners-Google',
-        'memorybot',
-        'MetaURI',
-        'MJ12bot',
-        'mlbot',
-        'Mnogosearch',
-        'mogimogi',
-        'MojeekBot',
-        'Moreoverbot',
-        'Morning Paper',
-        'Mrcgiguy',
-        'MSIECrawler',
-        'msnbot',
-        'msrbot',
-        'MVAClient',
-        'mxbot',
-        'NerdByNature\.Bot',
-        'NerdyBot',
-        'netEstate NE Crawler',
-        'netresearchserver',
-        'NetSeer Crawler',
-        'NewsGator',
-        'newsme',
-        'NextGenSearchBot',
-        'NG-Search',
-        'ngbot',
-        'nicebot',
-        'niki-bot',
-        '^NING\\/',
-        'Notifixious',
-        'noxtrumbot',
-        'Nusearch Spider',
-        'nutch',
-        'NutchCVS',
-        'Nymesis',
-        'obot',
-        'oegp',
-        'ocrawler',
-        'omgilibot',
-        'OmniExplorer_Bot',
-        'online link validator',
-        'Online Website Link Checker',
-        'OOZBOT',
-        'openindexspider',
-        'OpenWebSpider',
-        'OrangeBot',
-        'Orbiter',
-        'ow\.ly',
-        'PaperLiBot',
-        'Pingdom\.com_bot',
-        'Ploetz \+ Zeller',
-        'page2rss',
-        'PageBitesHyperBot',
-        'panscient',
-        'Peew',
-        'PercolateCrawler',
-        'phpcrawl',
-        'Pizilla',
-        'Plukkie',
-        'polybot',
-        'Pompos',
-        'postano',
-        'PostPost',
-        'postrank',
-        'proximic',
-        'psbot',
-        'purebot',
-        'PycURL',
-        'Python-httplib2',
-        'python-requests',
-        'Python-urllib',
-        'Qseero',
-        'QuerySeekerSpider',
-        'Qwantify',
-        'Radian6',
-        'RAMPyBot',
-        'RebelMouse',
-        'REL Link Checker',
-        'RetrevoPageAnalyzer',
-        'Riddler',
-        'Robosourcer',
-        'rogerbot',
-        'Ruby',
-        'RufusBot',
-        'SandCrawler',
-        'SBIder',
-        'ScoutJet',
-        'ScoutURLMonitor',
-        'Scrapy',
-        'ScreenerBot',
-        'scribdbot',
-        'Scrubby',
-        'SearchmetricsBot',
-        'SearchSight',
-        'seekbot',
-        'semanticdiscovery',
-        'SemrushBot',
-        'Sensis Web Crawler',
-        'SEOChat::Bot',
-        'seokicks-robot',
-        'SEOstats',
-        'Seznam screenshot-generator',
-        'seznambot',
-        'Shim-Crawler',
-        'ShopWiki',
-        'Shoula robot',
-        'ShowyouBot',
-        'SimpleCrawler',
-        'sistrix crawler',
-        'SiteBar',
-        'sitebot',
-        'siteexplorer\.info',
-        'SklikBot',
-        'slider\.com',
-        'slurp',
-        'smtbot',
-        'Snappy',
-        'sogou spider',
-        'sogou',
-        'Sosospider',
-        'spbot',
-        'Speedy Spider',
-        'speedy',
-        'SpiderMan',
-        'Sqworm',
-        'SSL-Crawler',
-        'StackRambler',
-        'suggybot',
-        'summify',
-        'SurdotlyBot',
-        'SurveyBot',
-        'SynooBot',
-        'tagoobot',
-        'teoma',
-        'TerrawizBot',
-        'TheSuBot',
-        'Thumbnail\.CZ robot',
-        'TinEye',
-        'toplistbot',
-        'Traackr.com',
-        'trendictionbot',
-        'TrueBot',
-        'truwoGPS',
-        'turnitinbot',
-        'TweetedTimes Bot',
-        'tweetedtimes\.com',
-        'TweetmemeBot',
-        'twengabot',
-        'Twikle',
-        'Twitterbot',
-        'uMBot',
-        'UnisterBot',
-        'UnwindFetchor',
-        'updated',
-        'urlappendbot',
-        'Urlfilebot',
-        'urlresolver',
-        'UsineNouvelleCrawler',
-        'Validator\.nu\\/LV',
-        'Vagabondo',
-        'Vivante Link Checker',
-        'voilabot',
-        'Vortex',
-        'voyager\\/',
-        'VYU2',
-        'W3C-checklink',
-        'W3C_CSS_Validator_JFouffa',
-        'W3C_I18n-Checker',
-        'W3C-mobileOK',
-        'W3C_Unicorn',
-        'W3C_Validator',
-        'web-archive-net\.com\.bot',
-        'Websquash\.com',
-        'WeSEE:Ads\\/PageBot',
-        'wbsearchbot',
-        'webcollage',
-        'webcompanycrawler',
-        'webcrawler',
-        'webmon ',
-        'WeSEE:Search',
-        'wf84',
-        'wget',
-        'wocbot',
-        'WoFindeIch Robot',
-        'WomlpeFactory',
-        'woriobot',
-        'wotbox',
-        'Xaldon_WebSpider',
-        'Xenu Link Sleuth',
-        'xintellibot',
-        'XML Sitemaps Generator',
-        'XoviBot',
-        'Y!J-ASR',
-        'yacy',
-        'yacybot',
-        'Yahoo Link Preview',
-        'Yahoo! Slurp China',
-        'Yahoo! Slurp',
-        'YahooSeeker',
-        'YahooSeeker-Testing',
-        'YandexBot',
-        'YandexImages',
-        'YandexMetrika',
-        'yandex',
-        'yanga',
-        'Yasaklibot',
-        'yeti',
-        'YioopBot',
-        'YisouSpider',
-        'YodaoBot',
-        'yoogliFetchAgent',
-        'yoozBot',
-        'YoudaoBot',
-        'Zao',
-        'Zealbot',
-        'zspider',
-        'ZyBorg',
-        '[a-z0-9\\-_]*((?<!cu)bot|crawler|archiver|transcoder|spider)',
-    );
+	protected static $crawlers = array(
+		'007ac9 Crawler',
+		'008\\/',
+		'360Spider',
+		'A6-Indexer',
+		'ABACHOBot',
+		'AbiLogicBot',
+		'Aboundex',
+		'Accoona-AI-Agent',
+		'acoon',
+		'AddSugarSpiderBot',
+		'AddThis',
+		'Adidxbot',
+		'ADmantX',
+		'AdvBot',
+		'AHC',
+		'ahrefsbot',
+		'aihitbot',
+		'Airmail',
+		'AISearchBot',
+		'Anemone',
+		'antibot',
+		'AnyApexBot',
+		'Applebot',
+		'arabot',
+		'Arachmo',
+		'archive-com',
+		'archive\.org_bot',
+		'B-l-i-t-z-B-O-T',
+		'backlinkcrawler',
+		'baiduspider',
+		'BecomeBot',
+		'BeslistBot',
+		'bibnum\.bnf',
+		'biglotron',
+		'BillyBobBot',
+		'Bimbot',
+		'bingbot',
+		'binlar',
+		'blekkobot',
+		'blexbot',
+		'BlitzBOT',
+		'bl\.uk_lddc_bot',
+		'bnf\.fr_bot',
+		'boitho\.com-dc',
+		'boitho\.com-robot',
+		'brainobot',
+		'btbot',
+		'BUbiNG',
+		'Butterfly\\/',
+		'buzzbot',
+		'BuzzSumo',
+		'careerbot',
+		'CatchBot',
+		'CC Metadata Scaper',
+		'ccbot',
+		'Cerberian Drtrs',
+		'changedetection',
+		'Charlotte',
+		'clips\.ua\.ac\.be',
+		'CloudFlare-AlwaysOnline',
+		'citeseerxbot',
+		'coccoc',
+		'classbot',
+		'Commons-HttpClient',
+		'content crawler spider',
+		'Content Crawler',
+		'convera',
+		'ConveraCrawler',
+		'CoPubbot',
+		'cosmos',
+		'Covario-IDS',
+		'CrawlBot',
+		'crawler4j',
+		'CrystalSemanticsBot',
+		'curl',
+		'cXensebot',
+		'CyberPatrol',
+		'DataparkSearch',
+		'dataprovider',
+		'DiamondBot',
+		'Digg',
+		'discobot',
+		'DomainAppender',
+		'domaincrawler',
+		'Domain Re-Animator Bot',
+		'dotbot',
+		'drupact',
+		'DuckDuckBot',
+		'EARTHCOM',
+		'EasouSpider',
+		'ec2linkfinder',
+		'edisterbot',
+		'ElectricMonk',
+		'elisabot',
+		'emailmarketingrobot',
+		'Embedly',
+		'EmeraldShield\.com WebBot',
+		'envolk\[ITS\]spider',
+		'EsperanzaBot',
+		'europarchive\.org',
+		'EventMachine HttpClient',
+		'exabot',
+		'ezooms',
+		'facebookexternalhit',
+		'Facebot',
+		'FAST Enteprise Crawler',
+		'FAST Enterprise Crawler',
+		'FAST-WebCrawler',
+		'FDSE robot',
+		'Feedfetcher-Google',
+		'FeedValidator',
+		'FindLinks',
+		'findlink',
+		'findthatfile',
+		'findxbot',
+		'Flamingo_SearchEngine',
+		'fluffy',
+		'fr-crawler',
+		'FRCrawler',
+		'FurlBot',
+		'FyberSpider',
+		'g00g1e\.net',
+		'GigablastOpenSource',
+		'grub-client',
+		'g2crawler',
+		'Gaisbot',
+		'GalaxyBot',
+		'genieBot',
+		'Genieo',
+		'GermCrawler',
+		'getprismatic\.com',
+		'gigabot',
+		'GingerCrawler',
+		'Girafabot',
+		'Gluten Free Crawler',
+		'gnam gnam spider',
+		'Go-http-client',
+		'Googlebot-Image',
+		'Googlebot-Mobile',
+		'Googlebot',
+		'Google-HTTP-Java-Client',
+		'Google favicon',
+		'GrapeshotCrawler',
+		'gslfbot',
+		'GurujiBot',
+		'HappyFunBot',
+		'Healthbot',
+		'heritrix',
+		'hl_ftien_spider',
+		'Holmes',
+		'htdig',
+		'httpunit',
+		'httrack',
+		'ia_archiver',
+		'iaskspider',
+		'iCCrawler',
+		'ichiro',
+		'igdeSpyder',
+		'iisbot',
+		'InAGist',
+		'InfoWizards Reciprocal Link System PRO',
+		'Insitesbot',
+		'integromedb',
+		'intelium_bot',
+		'InterfaxScanBot',
+		'IODC',
+		'IOI',
+		'ip-web-crawler\.com',
+		'ips-agent',
+		'IRLbot',
+		'IssueCrawler',
+		'IstellaBot',
+		'it2media-domain-crawler',
+		'iZSearch',
+		'Jaxified Bot',
+		'JOC Web Spider',
+		'jyxobot',
+		'KoepaBot',
+		'L\.webis',
+		'LapozzBot',
+		'Larbin',
+		'lb-spider',
+		'LDSpider',
+		'LexxeBot',
+		'libwww',
+		'Linguee Bot',
+		'Link Valet',
+		'linkdex',
+		'LinkExaminer',
+		'LinksManager\.com_bot',
+		'LinkpadBot',
+		'LinksCrawler',
+		'LinkWalker',
+		'Lipperhey Link Explorer',
+		'Lipperhey SEO Service',
+		'Livelapbot',
+		'LongURL API',
+		'lmspider',
+		'lssbot',
+		'lssrocketcrawler',
+		'ltx71',
+		'lufsbot',
+		'lwp-trivial',
+		'Mail\.RU_Bot',
+		'MegaIndex\.ru',
+		'mabontland',
+		'magpie-crawler',
+		'MagpieRSS',
+		'Mediapartners-Google',
+		'memorybot',
+		'MetaURI',
+		'MJ12bot',
+		'mlbot',
+		'Mnogosearch',
+		'mogimogi',
+		'MojeekBot',
+		'Moreoverbot',
+		'Morning Paper',
+		'Mrcgiguy',
+		'MSIECrawler',
+		'msnbot',
+		'msrbot',
+		'MVAClient',
+		'mxbot',
+		'NerdByNature\.Bot',
+		'NerdyBot',
+		'netEstate NE Crawler',
+		'netresearchserver',
+		'NetSeer Crawler',
+		'NewsGator',
+		'newsme',
+		'NextGenSearchBot',
+		'NG-Search',
+		'ngbot',
+		'nicebot',
+		'niki-bot',
+		'^NING\\/',
+		'Notifixious',
+		'noxtrumbot',
+		'Nusearch Spider',
+		'nutch',
+		'NutchCVS',
+		'Nymesis',
+		'obot',
+		'oegp',
+		'ocrawler',
+		'omgilibot',
+		'OmniExplorer_Bot',
+		'online link validator',
+		'Online Website Link Checker',
+		'OOZBOT',
+		'openindexspider',
+		'OpenWebSpider',
+		'OrangeBot',
+		'Orbiter',
+		'ow\.ly',
+		'PaperLiBot',
+		'Pingdom\.com_bot',
+		'Ploetz \+ Zeller',
+		'page2rss',
+		'PageBitesHyperBot',
+		'panscient',
+		'Peew',
+		'PercolateCrawler',
+		'phpcrawl',
+		'Pizilla',
+		'Plukkie',
+		'polybot',
+		'Pompos',
+		'postano',
+		'PostPost',
+		'postrank',
+		'proximic',
+		'psbot',
+		'purebot',
+		'PycURL',
+		'Python-httplib2',
+		'python-requests',
+		'Python-urllib',
+		'Qseero',
+		'QuerySeekerSpider',
+		'Qwantify',
+		'Radian6',
+		'RAMPyBot',
+		'RebelMouse',
+		'REL Link Checker',
+		'RetrevoPageAnalyzer',
+		'Riddler',
+		'Robosourcer',
+		'rogerbot',
+		'Ruby',
+		'RufusBot',
+		'SandCrawler',
+		'SBIder',
+		'ScoutJet',
+		'ScoutURLMonitor',
+		'Scrapy',
+		'ScreenerBot',
+		'scribdbot',
+		'Scrubby',
+		'SearchmetricsBot',
+		'SearchSight',
+		'seekbot',
+		'semanticdiscovery',
+		'SemrushBot',
+		'Sensis Web Crawler',
+		'SEOChat::Bot',
+		'seokicks-robot',
+		'SEOstats',
+		'Seznam screenshot-generator',
+		'seznambot',
+		'Shim-Crawler',
+		'ShopWiki',
+		'Shoula robot',
+		'ShowyouBot',
+		'SimpleCrawler',
+		'sistrix crawler',
+		'SiteBar',
+		'sitebot',
+		'siteexplorer\.info',
+		'SklikBot',
+		'slider\.com',
+		'slurp',
+		'smtbot',
+		'Snappy',
+		'sogou spider',
+		'sogou',
+		'Sosospider',
+		'spbot',
+		'Speedy Spider',
+		'speedy',
+		'SpiderMan',
+		'Sqworm',
+		'SSL-Crawler',
+		'StackRambler',
+		'suggybot',
+		'summify',
+		'SurdotlyBot',
+		'SurveyBot',
+		'SynooBot',
+		'tagoobot',
+		'teoma',
+		'TerrawizBot',
+		'TheSuBot',
+		'Thumbnail\.CZ robot',
+		'TinEye',
+		'toplistbot',
+		'Traackr.com',
+		'trendictionbot',
+		'TrueBot',
+		'truwoGPS',
+		'turnitinbot',
+		'TweetedTimes Bot',
+		'tweetedtimes\.com',
+		'TweetmemeBot',
+		'twengabot',
+		'Twikle',
+		'Twitterbot',
+		'uMBot',
+		'UnisterBot',
+		'UnwindFetchor',
+		'updated',
+		'urlappendbot',
+		'Urlfilebot',
+		'urlresolver',
+		'UsineNouvelleCrawler',
+		'Validator\.nu\\/LV',
+		'Vagabondo',
+		'Vivante Link Checker',
+		'voilabot',
+		'Vortex',
+		'voyager\\/',
+		'VYU2',
+		'W3C-checklink',
+		'W3C_CSS_Validator_JFouffa',
+		'W3C_I18n-Checker',
+		'W3C-mobileOK',
+		'W3C_Unicorn',
+		'W3C_Validator',
+		'web-archive-net\.com\.bot',
+		'Websquash\.com',
+		'WeSEE:Ads\\/PageBot',
+		'wbsearchbot',
+		'webcollage',
+		'webcompanycrawler',
+		'webcrawler',
+		'webmon ',
+		'WeSEE:Search',
+		'wf84',
+		'wget',
+		'wocbot',
+		'WoFindeIch Robot',
+		'WomlpeFactory',
+		'woriobot',
+		'wotbox',
+		'Xaldon_WebSpider',
+		'Xenu Link Sleuth',
+		'xintellibot',
+		'XML Sitemaps Generator',
+		'XoviBot',
+		'Y!J-ASR',
+		'yacy',
+		'yacybot',
+		'Yahoo Link Preview',
+		'Yahoo! Slurp China',
+		'Yahoo! Slurp',
+		'YahooSeeker',
+		'YahooSeeker-Testing',
+		'YandexBot',
+		'YandexImages',
+		'YandexMetrika',
+		'yandex',
+		'yanga',
+		'Yasaklibot',
+		'yeti',
+		'YioopBot',
+		'YisouSpider',
+		'YodaoBot',
+		'yoogliFetchAgent',
+		'yoozBot',
+		'YoudaoBot',
+		'Zao',
+		'Zealbot',
+		'zspider',
+		'ZyBorg',
+		'[a-z0-9\\-_]*((?<!cu)bot|crawler|archiver|transcoder|spider)',
+	);
 
-    /**
-     * All possible HTTP headers that represent the
-     * User-Agent string.
-     *
-     * @var array
-     */
-    protected static $uaHttpHeaders = array(
-        // The default User-Agent string.
-        'HTTP_USER_AGENT',
-        // Header can occur on devices using Opera Mini.
-        'HTTP_X_OPERAMINI_PHONE_UA',
-        // Vodafone specific header: http://www.seoprinciple.com/mobile-web-community-still-angry-at-vodafone/24/
-        'HTTP_X_DEVICE_USER_AGENT',
-        'HTTP_X_ORIGINAL_USER_AGENT',
-        'HTTP_X_SKYFIRE_PHONE',
-        'HTTP_X_BOLT_PHONE_UA',
-        'HTTP_DEVICE_STOCK_UA',
-        'HTTP_X_UCBROWSER_DEVICE_UA',
-    );
+	/**
+	 * All possible HTTP headers that represent the
+	 * User-Agent string.
+	 *
+	 * @var array
+	 */
+	protected static $uaHttpHeaders = array(
+		// The default User-Agent string.
+		'HTTP_USER_AGENT',
+		// Header can occur on devices using Opera Mini.
+		'HTTP_X_OPERAMINI_PHONE_UA',
+		// Vodafone specific header: http://www.seoprinciple.com/mobile-web-community-still-angry-at-vodafone/24/
+		'HTTP_X_DEVICE_USER_AGENT',
+		'HTTP_X_ORIGINAL_USER_AGENT',
+		'HTTP_X_SKYFIRE_PHONE',
+		'HTTP_X_BOLT_PHONE_UA',
+		'HTTP_DEVICE_STOCK_UA',
+		'HTTP_X_UCBROWSER_DEVICE_UA',
+	);
 
-    /**
-     * Class constructor.
-     */
-    public function __construct(array $headers = null, $userAgent = null)
-    {
-        $this->setHttpHeaders($headers);
-        $this->setUserAgent($userAgent);
-    }
+	/**
+	 * Class constructor.
+	 */
+	public function __construct(array $headers = null, $userAgent = null)
+	{
+		$this->setHttpHeaders($headers);
+		$this->setUserAgent($userAgent);
+	}
 
-    public function setHttpHeaders($httpHeaders = null)
-    {
-        // use global _SERVER if $httpHeaders aren't defined
-        if (!is_array($httpHeaders) || !count($httpHeaders)) {
-            $httpHeaders = $_SERVER;
-        }
-        // clear existing headers
-        $this->httpHeaders = array();
-        // Only save HTTP headers. In PHP land, that means only _SERVER vars that
-        // start with HTTP_.
-        foreach ($httpHeaders as $key => $value) {
-            if (substr($key, 0, 5) === 'HTTP_') {
-                $this->httpHeaders[$key] = $value;
-            }
-        }
-    }
+	public function setHttpHeaders($httpHeaders = null)
+	{
+		// use global _SERVER if $httpHeaders aren't defined
+		if (!is_array($httpHeaders) || !count($httpHeaders)) {
+			$httpHeaders = $_SERVER;
+		}
+		// clear existing headers
+		$this->httpHeaders = array();
+		// Only save HTTP headers. In PHP land, that means only _SERVER vars that
+		// start with HTTP_.
+		foreach ($httpHeaders as $key => $value) {
+			if (substr($key, 0, 5) === 'HTTP_') {
+				$this->httpHeaders[$key] = $value;
+			}
+		}
+	}
 
-    public function getUaHttpHeaders()
-    {
-        return self::$uaHttpHeaders;
-    }
+	public function getUaHttpHeaders()
+	{
+		return self::$uaHttpHeaders;
+	}
 
-    public function setUserAgent($userAgent = null)
-    {
-        if (false === empty($userAgent)) {
-            return $this->userAgent = $userAgent;
-        } else {
-            $this->userAgent = null;
-            foreach ($this->getUaHttpHeaders() as $altHeader) {
-                if (false === empty($this->httpHeaders[$altHeader])) { // @todo: should use getHttpHeader(), but it would be slow. (Serban)
-                    $this->userAgent .= $this->httpHeaders[$altHeader].' ';
-                }
-            }
+	public function setUserAgent($userAgent = null)
+	{
+		if (false === empty($userAgent)) {
+			return $this->userAgent = $userAgent;
+		} else {
+			$this->userAgent = null;
+			foreach ($this->getUaHttpHeaders() as $altHeader) {
+				if (false === empty($this->httpHeaders[$altHeader])) { // @todo: should use getHttpHeader(), but it would be slow. (Serban)
+					$this->userAgent .= $this->httpHeaders[$altHeader].' ';
+				}
+			}
 
-            return $this->userAgent = (!empty($this->userAgent) ? trim($this->userAgent) : null);
-        }
-    }
+			return $this->userAgent = (!empty($this->userAgent) ? trim($this->userAgent) : null);
+		}
+	}
 
-    public function getRegex()
-    {
-        return '('.implode('|', self::$crawlers).')';
-    }
+	public function getRegex()
+	{
+		return '('.implode('|', self::$crawlers).')';
+	}
 
-    public function isCrawler($userAgent = null)
-    {
-        $agent = is_null($userAgent) ? $this->userAgent : $userAgent;
+	public function isCrawler($userAgent = null)
+	{
+		$agent = is_null($userAgent) ? $this->userAgent : $userAgent;
 
-        $result = preg_match('/'.$this->getRegex().'/i', $agent, $matches);
+		$result = preg_match('/'.$this->getRegex().'/i', $agent, $matches);
 
-        if ($matches) {
-            $this->matches = $matches;
-        }
+		if ($matches) {
+			$this->matches = $matches;
+		}
 
-        return (bool) $result;
-    }
+		return (bool) $result;
+	}
 
-    public function getMatches()
-    {
-        return $this->matches[0];
-    }
+	public function getMatches()
+	{
+		return $this->matches[0];
+	}
 }