CrawlerDetect::setHttpHeaders() - Code Metrics - Inspection of "Increase performance by over 75%" - JayBizzle/Crawler-Detect - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#42)

by Mark

created 2015-12-10 20:55 UTC

CrawlerDetect::setHttpHeaders() B

↳ Parent: CrawlerDetect

Complexity

Conditions	5
Paths	6

Size

Total Lines	16
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes	4
Bugs	1	Features	1

Metric	Value
c	4
b	1
f	1
dl	0
loc	16
rs	8.8571
cc	5
eloc	7
nc	6
nop	1

<?php

namespace Jaybizzle\CrawlerDetect;

class CrawlerDetect
{
    /**
     * The user agent
     * 
     * @var null
     */
    protected $userAgent = null;

    /**
     * Headers that container user agent
     * 
     * @var array
     */
    protected $httpHeaders = array();

    /**
     * Store regex matches
     * 
     * @var array
     */
    protected $matches = array();

    /**
     * List of strings to remove from the user agent before running the crawler regex
     * Over a large list of user agents, this gives us about a 55% speed increase!
     * 
     * @var array
     */
    protected static $ignore = array(
        'Safari.[\d\.]*',
        'Firefox.[\d\.]*',
        'Chrome.[\d\.]*',
        'Chromium.[\d\.]*',
        'MSIE.[\d\.]',
        'Opera\/[\d\.]*',
        'Mozilla.[\d\.]*',
        'AppleWebKit.[\d\.]*',
        'Trident.[\d\.]*',
        'Windows NT.[\d\.]*',
        'Android.[\d\.]*',
        'Macintosh.',
        'Ubuntu',
        'Linux',
        'Intel',
        'Mac OS X',
        'Gecko.[\d\.]*',
        'KHTML',
        'CriOS.[\d\.]*',
        'CPU iPhone OS ([0-9_])* like Mac OS X',
        'CPU OS ([0-9_])* like Mac OS X',
        'iPod',
        'like Gecko',
        'compatible',
        'x86_..',
        'i686',
        'x64',
        'X11',
        'rv:[\d\.]*',
        'Version.[\d\.]*',
        'WOW64',
        'Win64',
        'Dalvik.[\d\.]*',
        '\.NET CLR [\d\.]*',
        'Presto.[\d\.]*',
        'Media Center PC',
    );

    /**
     * Array of regular expressions to match against the user agent
     * 
     * @var array
     */
    protected static $crawlers = array(
        '008\\/',
        'A6-Indexer',
        'Aboundex',
        'Accoona-AI-Agent',
        'acoon',
        'AddThis',
        'ADmantX',
        'AHC',
        'Airmail',
        'Anemone',
        'Arachmo',
        'archive-com',
        'B-l-i-t-z-B-O-T',
        'bibnum\.bnf',
        'biglotron',
        'binlar',
        'boitho\.com-dc',
        'BUbiNG',
        'Butterfly\\/',
        'BuzzSumo',
        'CC Metadata Scaper',
        'Cerberian Drtrs',
        'changedetection',
        'Charlotte',
        'clips\.ua\.ac\.be',
        'CloudFlare-AlwaysOnline',
        'coccoc',
        'Commons-HttpClient',
        'convera',
        'cosmos',
        'Covario-IDS',
        'curl',
        'CyberPatrol',
        'DataparkSearch',
        'dataprovider',
        'Digg',
        'DomainAppender',
        'drupact',
        'EARTHCOM',
        'ec2linkfinder',
        'ElectricMonk',
        'Embedly',
        'europarchive\.org',
        'EventMachine HttpClient',
        'ezooms',
        'eZ Publish Link Validator',
        'facebookexternalhit',
        'Feedfetcher-Google',
        'FeedValidator',
        'FindLinks',
        'findlink',
        'findthatfile',
        'Flamingo_SearchEngine',
        'fluffy',
        'getprismatic\.com',
        'g00g1e\.net',
        'GigablastOpenSource',
        'grub-client',
        'Genieo',
        'Go-http-client',
        'Google-HTTP-Java-Client',
        'Google favicon',
        'heritrix',
        'Holmes',
        'htdig',
        'httpunit',
        'httrack',
        'ichiro',
        'igdeSpyder',
        'InAGist',
        'InfoWizards Reciprocal Link System PRO',
        'integromedb',
        'IODC',
        'IOI',
        'ips-agent',
        'iZSearch',
        'L\.webis',
        'Larbin',
        'libwww',
        'Link Valet',
        'linkdex',
        'LinkExaminer',
        'LinkWalker',
        'Lipperhey Link Explorer',
        'Lipperhey SEO Service',
        'LongURL API',
        'ltx71',
        'lwp-trivial',
        'MegaIndex\.ru',
        'mabontland',
        'MagpieRSS',
        'Mediapartners-Google',
        'MetaURI',
        'Mnogosearch',
        'mogimogi',
        'Morning Paper',
        'Mrcgiguy',
        'MVAClient',
        'netresearchserver',
        'NewsGator',
        'newsme',
        'NG-Search',
        '^NING\\/',
        'Notifixious',
        'nutch',
        'NutchCVS',
        'Nymesis',
        'oegp',
        'online link validator',
        'Online Website Link Checker',
        'Orbiter',
        'ow\.ly',
        'Ploetz \+ Zeller',
        'page2rss',
        'panscient',
        'Peew',
        'phpcrawl',
        'Pizilla',
        'Plukkie',
        'Pompos',
        'postano',
        'PostPost',
        'postrank',
        'proximic',
        'PycURL',
        'Python-httplib2',
        'python-requests',
        'Python-urllib',
        'Qseero',
        'Qwantify',
        'Radian6',
        'RebelMouse',
        'REL Link Checker',
        'RetrevoPageAnalyzer',
        'Riddler',
        'Robosourcer',
        'Ruby',
        'SBIder',
        'ScoutJet',
        'ScoutURLMonitor',
        'Scrapy',
        'Scrubby',
        'SearchSight',
        'semanticdiscovery',
        'SEOstats',
        'Seznam screenshot-generator',
        'ShopWiki',
        'SiteBar',
        'siteexplorer\.info',
        'slider\.com',
        'slurp',
        'Snappy',
        'sogou',
        'speedy',
        'Sqworm',
        'StackRambler',
        'Stratagems Kumo',
        'summify',
        'teoma',
        'theoldreader\.com',
        'TinEye',
        'Traackr.com',
        'truwoGPS',
        'tweetedtimes\.com',
        'Twikle',
        'UnwindFetchor',
        'updated',
        'urlresolver',
        'Validator\.nu\\/LV',
        'Vagabondo',
        'Vivante Link Checker',
        'Vortex',
        'voyager\\/',
        'VYU2',
        'W3C-checklink',
        'W3C_CSS_Validator_JFouffa',
        'W3C_I18n-Checker',
        'W3C-mobileOK',
        'W3C_Unicorn',
        'W3C_Validator',
        'WebIndex',
        'Websquash\.com',
        'webcollage',
        'webmon ',
        'WeSEE:Search',
        'wf84',
        'wget',
        'WomlpeFactory',
        'wotbox',
        'Xenu Link Sleuth',
        'XML Sitemaps Generator',
        'Y!J-ASR',
        'yacy',
        'Yahoo Link Preview',
        'Yahoo! Slurp China',
        'Yahoo! Slurp',
        'YahooSeeker',
        'YahooSeeker-Testing',
        'YandexImages',
        'YandexMetrika',
        'yandex',
        'yanga',
        'yeti',
        'yoogliFetchAgent',
        'Zao',
        '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',
    );

    /**
     * Class constructor.
     */
    public function __construct(array $headers = null, $userAgent = null)
    {
        $this->setHttpHeaders($headers);
        $this->setUserAgent($userAgent);
    }

    /**
     * Set HTTP headers
     * 
     * @param array $httpHeaders
     */
    public function setHttpHeaders($httpHeaders = null)
// Bad
class Router
{
    public function generate($path)
    {
        return $_SERVER['HOST'].$path;
    }
}

// Better
class Router
{
    private $host;

    public function __construct($host)
    {
        $this->host = $host;
    }

    public function generate($path)
    {
        return $this->host.$path;
    }
}

class Controller
{
    public function myAction(Request $request)
    {
        // Instead of
        $page = isset($_GET['page']) ? intval($_GET['page']) : 1;

        // Better (assuming you use the Symfony2 request)
        $page = $request->query->get('page', 1);
    }
}
    {
        // 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;
            }
        }
    }

    /**
     * Return user agent headers
     * 
     * @return array
     */
    public function getUaHttpHeaders()
    {
        return self::$uaHttpHeaders;
    }

    /**
     * Set the user agent
     * 
     * @param string $userAgent
     */
    public function setUserAgent($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.
                    $this->userAgent .= $this->httpHeaders[$altHeader].' ';
                }
            }

            return $this->userAgent = (!empty($this->userAgent) ? trim($this->userAgent) : null);
class Id
{
    public $id;

    public function __construct($id)
    {
        $this->id = $id;
    }

}

class Account
{
    /** @var  Id $id */
    public $id;
}

$account_id = false;

if (starsAreRight()) {
    $account_id = new Id(42);
}

$account = new Account();
if ($account instanceof Id)
{
    $account->id = $account_id;
}
        }
    }

    /**
     * Build the user agent regex
     * 
     * @return string
     */
    public function getRegex()
    {
        return '('.implode('|', self::$crawlers).')';
    }

    /**
     * Build the replacement regex
     * 
     * @return string
     */
    public function getIgnored()
    {
        return '('.implode('|', self::$ignore).')';
    }

    /**
     * Check user aganet string against the regex
     * 
     * @param  string  $userAgent
     * @return boolean
     */
    public function isCrawler($userAgent = null)
    {
        $agent = is_null($userAgent) ? $this->userAgent : $userAgent;

        $agent = preg_replace('/'.$this->getIgnored().'/i', '', $agent);

        $result = preg_match('/'.$this->getRegex().'/i', $agent, $matches);

        if ($matches) {

            $this->matches = $matches;
        }

        return (bool) $result;
    }

    /**
     * Return the matches
     * 
     * @return array
     */
    public function getMatches()
    {
        return $this->matches[0];
    }
}


1			<?php
2
3			namespace Jaybizzle\CrawlerDetect;
4
5			class CrawlerDetect
6			{
7			/**
8			* The user agent
9			*
10			* @var null
11			*/
12			protected $userAgent = null;
13
14			/**
15			* Headers that container user agent
16			*
17			* @var array
18			*/
19			protected $httpHeaders = array();
20
21			/**
22			* Store regex matches
23			*
24			* @var array
25			*/
26			protected $matches = array();
27
28			/**
29			* List of strings to remove from the user agent before running the crawler regex
30			* Over a large list of user agents, this gives us about a 55% speed increase!
31			*
32			* @var array
33			*/
34			protected static $ignore = array(
35			'Safari.[\d\.]*',
36			'Firefox.[\d\.]*',
37			'Chrome.[\d\.]*',
38			'Chromium.[\d\.]*',
39			'MSIE.[\d\.]',
40			'Opera\/[\d\.]*',
41			'Mozilla.[\d\.]*',
42			'AppleWebKit.[\d\.]*',
43			'Trident.[\d\.]*',
44			'Windows NT.[\d\.]*',
45			'Android.[\d\.]*',
46			'Macintosh.',
47			'Ubuntu',
48			'Linux',
49			'Intel',
50			'Mac OS X',
51			'Gecko.[\d\.]*',
52			'KHTML',
53			'CriOS.[\d\.]*',
54			'CPU iPhone OS ([0-9_])* like Mac OS X',
55			'CPU OS ([0-9_])* like Mac OS X',
56			'iPod',
57			'like Gecko',
58			'compatible',
59			'x86_..',
60			'i686',
61			'x64',
62			'X11',
63			'rv:[\d\.]*',
64			'Version.[\d\.]*',
65			'WOW64',
66			'Win64',
67			'Dalvik.[\d\.]*',
68			'\.NET CLR [\d\.]*',
69			'Presto.[\d\.]*',
70			'Media Center PC',
71			);
72
73			/**
74			* Array of regular expressions to match against the user agent
75			*
76			* @var array
77			*/
78			protected static $crawlers = array(
79			'008\\/',
80			'A6-Indexer',
81			'Aboundex',
82			'Accoona-AI-Agent',
83			'acoon',
84			'AddThis',
85			'ADmantX',
86			'AHC',
87			'Airmail',
88			'Anemone',
89			'Arachmo',
90			'archive-com',
91			'B-l-i-t-z-B-O-T',
92			'bibnum\.bnf',
93			'biglotron',
94			'binlar',
95			'boitho\.com-dc',
96			'BUbiNG',
97			'Butterfly\\/',
98			'BuzzSumo',
99			'CC Metadata Scaper',
100			'Cerberian Drtrs',
101			'changedetection',
102			'Charlotte',
103			'clips\.ua\.ac\.be',
104			'CloudFlare-AlwaysOnline',
105			'coccoc',
106			'Commons-HttpClient',
107			'convera',
108			'cosmos',
109			'Covario-IDS',
110			'curl',
111			'CyberPatrol',
112			'DataparkSearch',
113			'dataprovider',
114			'Digg',
115			'DomainAppender',
116			'drupact',
117			'EARTHCOM',
118			'ec2linkfinder',
119			'ElectricMonk',
120			'Embedly',
121			'europarchive\.org',
122			'EventMachine HttpClient',
123			'ezooms',
124			'eZ Publish Link Validator',
125			'facebookexternalhit',
126			'Feedfetcher-Google',
127			'FeedValidator',
128			'FindLinks',
129			'findlink',
130			'findthatfile',
131			'Flamingo_SearchEngine',
132			'fluffy',
133			'getprismatic\.com',
134			'g00g1e\.net',
135			'GigablastOpenSource',
136			'grub-client',
137			'Genieo',
138			'Go-http-client',
139			'Google-HTTP-Java-Client',
140			'Google favicon',
141			'heritrix',
142			'Holmes',
143			'htdig',
144			'httpunit',
145			'httrack',
146			'ichiro',
147			'igdeSpyder',
148			'InAGist',
149			'InfoWizards Reciprocal Link System PRO',
150			'integromedb',
151			'IODC',
152			'IOI',
153			'ips-agent',
154			'iZSearch',
155			'L\.webis',
156			'Larbin',
157			'libwww',
158			'Link Valet',
159			'linkdex',
160			'LinkExaminer',
161			'LinkWalker',
162			'Lipperhey Link Explorer',
163			'Lipperhey SEO Service',
164			'LongURL API',
165			'ltx71',
166			'lwp-trivial',
167			'MegaIndex\.ru',
168			'mabontland',
169			'MagpieRSS',
170			'Mediapartners-Google',
171			'MetaURI',
172			'Mnogosearch',
173			'mogimogi',
174			'Morning Paper',
175			'Mrcgiguy',
176			'MVAClient',
177			'netresearchserver',
178			'NewsGator',
179			'newsme',
180			'NG-Search',
181			'^NING\\/',
182			'Notifixious',
183			'nutch',
184			'NutchCVS',
185			'Nymesis',
186			'oegp',
187			'online link validator',
188			'Online Website Link Checker',
189			'Orbiter',
190			'ow\.ly',
191			'Ploetz \+ Zeller',
192			'page2rss',
193			'panscient',
194			'Peew',
195			'phpcrawl',
196			'Pizilla',
197			'Plukkie',
198			'Pompos',
199			'postano',
200			'PostPost',
201			'postrank',
202			'proximic',
203			'PycURL',
204			'Python-httplib2',
205			'python-requests',
206			'Python-urllib',
207			'Qseero',
208			'Qwantify',
209			'Radian6',
210			'RebelMouse',
211			'REL Link Checker',
212			'RetrevoPageAnalyzer',
213			'Riddler',
214			'Robosourcer',
215			'Ruby',
216			'SBIder',
217			'ScoutJet',
218			'ScoutURLMonitor',
219			'Scrapy',
220			'Scrubby',
221			'SearchSight',
222			'semanticdiscovery',
223			'SEOstats',
224			'Seznam screenshot-generator',
225			'ShopWiki',
226			'SiteBar',
227			'siteexplorer\.info',
228			'slider\.com',
229			'slurp',
230			'Snappy',
231			'sogou',
232			'speedy',
233			'Sqworm',
234			'StackRambler',
235			'Stratagems Kumo',
236			'summify',
237			'teoma',
238			'theoldreader\.com',
239			'TinEye',
240			'Traackr.com',
241			'truwoGPS',
242			'tweetedtimes\.com',
243			'Twikle',
244			'UnwindFetchor',
245			'updated',
246			'urlresolver',
247			'Validator\.nu\\/LV',
248			'Vagabondo',
249			'Vivante Link Checker',
250			'Vortex',
251			'voyager\\/',
252			'VYU2',
253			'W3C-checklink',
254			'W3C_CSS_Validator_JFouffa',
255			'W3C_I18n-Checker',
256			'W3C-mobileOK',
257			'W3C_Unicorn',
258			'W3C_Validator',
259			'WebIndex',
260			'Websquash\.com',
261			'webcollage',
262			'webmon ',
263			'WeSEE:Search',
264			'wf84',
265			'wget',
266			'WomlpeFactory',
267			'wotbox',
268			'Xenu Link Sleuth',
269			'XML Sitemaps Generator',
270			'Y!J-ASR',
271			'yacy',
272			'Yahoo Link Preview',
273			'Yahoo! Slurp China',
274			'Yahoo! Slurp',
275			'YahooSeeker',
276			'YahooSeeker-Testing',
277			'YandexImages',
278			'YandexMetrika',
279			'yandex',
280			'yanga',
281			'yeti',
282			'yoogliFetchAgent',
283			'Zao',
284			'ZyBorg',
285			'[a-z0-9\\-_]*((?<!cu)bot\|crawler\|archiver\|transcoder\|spider)',
286			);
287
288			/**
289			* All possible HTTP headers that represent the
290			* User-Agent string.
291			*
292			* @var array
293			*/
294			protected static $uaHttpHeaders = array(
295			// The default User-Agent string.
296			'HTTP_USER_AGENT',
297			// Header can occur on devices using Opera Mini.
298			'HTTP_X_OPERAMINI_PHONE_UA',
299			// Vodafone specific header: http://www.seoprinciple.com/mobile-web-community-still-angry-at-vodafone/24/
			0 ignored issues – show Unused Code Comprehensibility introduced 2015-11-25 13:32 UTC by Report Bug Copy Issue Report `38%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
300			'HTTP_X_DEVICE_USER_AGENT',
301			'HTTP_X_ORIGINAL_USER_AGENT',
302			'HTTP_X_SKYFIRE_PHONE',
303			'HTTP_X_BOLT_PHONE_UA',
304			'HTTP_DEVICE_STOCK_UA',
305			'HTTP_X_UCBROWSER_DEVICE_UA',
306			);
307
308			/**
309			* Class constructor.
310			*/
311			public function __construct(array $headers = null, $userAgent = null)
312			{
313			$this->setHttpHeaders($headers);
314			$this->setUserAgent($userAgent);
315			}
316
317			/**
318			* Set HTTP headers
319			*
320			* @param array $httpHeaders
321			*/
322			public function setHttpHeaders($httpHeaders = null)
			0 ignored issues – show Coding Style introduced 2015-11-25 13:32 UTC by Report Bug Copy Issue Report `setHttpHeaders` uses the super-global variable `$_SERVER` which is generally not recommended. Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: // Bad class Router { public function generate($path) { return $_SERVER['HOST'].$path; } } // Better class Router { private $host; public function __construct($host) { $this->host = $host; } public function generate($path) { return $this->host.$path; } } class Controller { public function myAction(Request $request) { // Instead of $page = isset($_GET['page']) ? intval($_GET['page']) : 1; // Better (assuming you use the Symfony2 request) $page = $request->query->get('page', 1); } } Loading history...
323			{
324			// use global _SERVER if $httpHeaders aren't defined
325			if (!is_array($httpHeaders) \|\| !count($httpHeaders)) {
326			$httpHeaders = $_SERVER;
327			}
328			// clear existing headers
329			$this->httpHeaders = array();
330			// Only save HTTP headers. In PHP land, that means only _SERVER vars that
331			// start with HTTP_.
332			foreach ($httpHeaders as $key => $value) {
333			if (substr($key, 0, 5) === 'HTTP_') {
334			$this->httpHeaders[$key] = $value;
335			}
336			}
337			}
338
339			/**
340			* Return user agent headers
341			*
342			* @return array
343			*/
344			public function getUaHttpHeaders()
345			{
346			return self::$uaHttpHeaders;
347			}
348
349			/**
350			* Set the user agent
351			*
352			* @param string $userAgent
353			*/
354			public function setUserAgent($userAgent = null)
355			{
356			if (false === empty($userAgent)) {
357			return $this->userAgent = $userAgent;
			0 ignored issues – show Documentation Bug introduced 2015-12-10 20:57 UTC by Report Bug Copy Issue Report It seems like `$userAgent` of type `string` is incompatible with the declared type `null` of property `$userAgent`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
358			} else {
359			$this->userAgent = null;
360			foreach ($this->getUaHttpHeaders() as $altHeader) {
361			if (false === empty($this->httpHeaders[$altHeader])) { // @todo: should use getHttpHeader(), but it would be slow.
362			$this->userAgent .= $this->httpHeaders[$altHeader].' ';
363			}
364			}
365
366			return $this->userAgent = (!empty($this->userAgent) ? trim($this->userAgent) : null);
			0 ignored issues – show Documentation Bug introduced 2015-12-10 20:57 UTC by Report Bug Copy Issue Report It seems like `!empty($this->userAgent)...this->userAgent) : null` can also be of type `string`. However, the property `$userAgent` is declared as type `null`. Maybe add an additional type check? Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a mixed type is assigned to a property that is type hinted more strictly. For example, imagine you have a variable `$accountId` that can either hold an Id object or false (if there is no account id yet). Your code now assigns that value to the `id` property of an instance of the `Account` class. This class holds a proper account, so the id value must no longer be false. Either this assignment is in error or a type check should be added for that assignment. class Id { public $id; public function __construct($id) { $this->id = $id; } } class Account { /** @var Id $id */ public $id; } $account_id = false; if (starsAreRight()) { $account_id = new Id(42); } $account = new Account(); if ($account instanceof Id) { $account->id = $account_id; } Loading history...
367			}
368			}
369
370			/**
371			* Build the user agent regex
372			*
373			* @return string
374			*/
375			public function getRegex()
376			{
377			return '('.implode('\|', self::$crawlers).')';
378			}
379
380			/**
381			* Build the replacement regex
382			*
383			* @return string
384			*/
385			public function getIgnored()
386			{
387			return '('.implode('\|', self::$ignore).')';
388			}
389
390			/**
391			* Check user aganet string against the regex
392			*
393			* @param string $userAgent
394			* @return boolean
395			*/
396			public function isCrawler($userAgent = null)
397			{
398			$agent = is_null($userAgent) ? $this->userAgent : $userAgent;
399
400			$agent = preg_replace('/'.$this->getIgnored().'/i', '', $agent);
401
402			$result = preg_match('/'.$this->getRegex().'/i', $agent, $matches);
403
404			if ($matches) {
			0 ignored issues – show Bug Best Practice introduced 2015-11-25 13:32 UTC by Report Bug Copy Issue Report The expression `$matches` of type `string[]` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
405			$this->matches = $matches;
406			}
407
408			return (bool) $result;
409			}
410
411			/**
412			* Return the matches
413			*
414			* @return array
415			*/
416			public function getMatches()
417			{
418			return $this->matches[0];
419			}
420			}
421

JayBizzle / Crawler-Detect

Pull Request — master (#42)

CrawlerDetect::setHttpHeaders() B

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