Analyze::NofollowTag() - Code Metrics - Inspection of "No-Follow tag" - frnxstd/seo-checkup - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( d4b2aa...fef639 )

by Burak

created 2018-02-02 20:12 UTC

Analyze::NofollowTag() A

↳ Parent: Analyze

Complexity

Conditions	3
Paths	3

Size

Total Lines	16
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	16
rs	9.4285
c	0
b	0
f	0
cc	3
eloc	8
nc	3
nop	0

<?php
namespace SEOCheckup;

/**
 * @package seo-checkup
 * @author  Burak <[email protected]>
 */

use DOMDocument;
use DOMXPath;

class Analyze extends PreRequirements
{

    /**
     * @var array $data
     */
    private $data;


    /**
     * @var Helpers $helpers
     */
    private $helpers;

    /**
     * @var DOMDocument $dom
     */
    private $dom;

    /**
     * Initialize from URL via Guzzle
     *
     * @param string $url
     * @return $this
     */
    public function __construct($url)
    {
        $response      = $this->Request($url);

        $this->data    = [
            'url'        => $url,
            'parsed_url' => parse_url($url),
            'status'     => $response->getStatusCode(),
            'headers'    => $response->getHeaders(),
            'content'    => $response->getBody()->getContents()
        ];

        $this->helpers = new Helpers($this->data);

        return $this;
    }

    /**
     * Initialize DOMDocument
     *
     * @return DOMDocument
     */
    private function DOMDocument()
    {
        libxml_use_internal_errors(true);

        $this->dom = new DOMDocument();

        return $this->dom;
    }

    /**
     * Initialize DOMXPath
     *
     * @return DOMXPath
     */
    private function DOMXPath()
    {
        return new DOMXPath($this->dom);
    }

    /**
     * Standardizes output
     *
     * @param mixed $return
     * @param string $service
     * @return array
     */
    private function Output($return, $service)
    {
        return [
            'url'       => $this->data['url'],
            'status'    => $this->data['status'],
            'headers'   => $this->data['headers'],
            'service'   => preg_replace("([A-Z])", " $0", $service),
            'time'      => time(),
            'data'      => $return
        ];
    }

    /**
     * Analyze Broken Links in a page
     *
     * @return array
     */
    public function BrokenLinks()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $links  = $this->helpers->GetLinks($dom);
        $scan   = ['errors' => [], 'passed' => []];
        $i      = 0;

        foreach ($links as $key => $link)
        {
            $i++;

            if($i >= 25)
                break;

            $status = $this->Request($link)->getStatusCode();

            if(substr($status,0,1) > 3 && $status != 999)
                $scan['errors']["HTTP {$status}"][] = $link;
            else
                $scan['passed']["HTTP {$status}"][] = $link;
        }
        return $this->Output([
            'links'   => $links,
            'scanned' => $scan
        ], __FUNCTION__);
    }

    /**
     * Checks header parameters if there is something about cache
     *
     * @return array
     */
    public function Cache()
    {
        $output = ['headers' => [], 'html' => []];

        foreach ($this->data['headers'] as $header)
        {
            foreach ($header as $item)
            {
                if(strpos(mb_strtolower($item),'cache') !== false)
                {
                    $output['headers'][] = $item;
                }
            }
        }

        $dom   = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);
        $xpath = $this->DOMXPath();

        foreach ($xpath->query('//comment()') as $comment)
        {
            if(strpos(mb_strtolower($comment->textContent),'cache') !== false)
            {
                $output['html'][] = '<!-- '.trim($comment->textContent).' //-->';
            }
        }
        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Checks canonical tag
     *
     * @return array
     */
    public function CanonicalTag()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);
        $output = array();
        $links  = $this->helpers->GetAttributes($dom, 'link', 'rel');

        foreach($links as $item)
        {
            if($item == 'canonical')
            {
                $output[] = $item;
            }
        }

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Determines character set from headers
     *
     * @TODO: Use Regex instead of explode
     * @return array
     */
    public function CharacterSet()
    {
        $output = '';

        foreach ($this->data['headers'] as $key => $header)
        {
            if($key == 'Content-Type')
            {
                $output = explode('=', explode(';',$header[0])[1])[1];
            }
        }
        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Calculates code / content percentage
     *
     * @return array
     */
    public function CodeContent()
    {
        $page_size = mb_strlen($this->data['content'], 'utf8');
        $dom       = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $script    = $dom->getElementsByTagName('script');
        $remove    = array();

        foreach ($script as $item)
        {
            $remove[] = $item;
        }

        foreach ($remove as $item)
        {
            $item->parentNode->removeChild($item);
        }

        $page         = $dom->saveHTML();
        $content_size = mb_strlen(strip_tags($page), 'utf8');
        $rate         = (round($content_size / $page_size * 100));
        $output       = array(
            'page_size'     => $page_size,
            'code_size'     => ($page_size - $content_size),
            'content_size'  => $content_size,
            'content'       => $this->helpers->Whitespace(strip_tags($page)),
            'percentage'    => "$rate%"
        );

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Checks deprecated HTML tag usage
     *
     * @return array
     */
    public function DeprecatedHTML()
    {
        $dom       = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $deprecated_tags = array(
            'acronym',
            'applet',
            'basefont',
            'big',
            'center',
            'dir',
            'font',
            'frame',
            'frameset',
            'isindex',
            'noframes',
            's',
            'strike',
            'tt',
            'u'
        );

        $output = array();

        foreach ($deprecated_tags as $tag)
        {
            $tags   = $dom->getElementsByTagName($tag);

            if($tags->length > 0)
            {
                $output[$tag] = $tags->length;
            }
        }

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Determines length of the domain
     *
     * @return array
     */
    public function DomainLength()
    {
        $domain = explode('.',$this->data['parsed_url']['host']);

        array_pop($domain);

        $domain = implode('.',$domain);

        return $this->Output(strlen($domain), __FUNCTION__);
    }

    /**
     * Looks for a favicon
     *
     * @return array
     */
    public function Favicon()
    {
        $ico    = "{$this->data['parsed_url']['scheme']}://{$this->data['parsed_url']['host']}/favicon.ico";
        $link   = '';

        if($this->Request($ico)->getStatusCode() === 200)
        {
            $link   = $ico;
        } else {

            $dom    = $this->DOMDocument();
            $dom->loadHTML($this->data['content']);

            $tags   = $dom->getElementsByTagName('link');
            $fav    = null;

            foreach ($tags as $tag)
            {
                if($tag->getAttribute('rel') == 'shortcut icon' OR $tag->getAttribute('rel') == 'icon')
                {
                    $fav = $tag->getAttribute('href');
                    break;
                }
            }

            if (!filter_var($fav, FILTER_VALIDATE_URL) === false && $this->Request($fav)->getStatusCode() == 200)
            {
                $link = $fav;
            } else if($this->Request($this->data['parsed_url']['scheme'].'://'.$this->data['parsed_url']['host'].'/'.$fav)->getStatusCode() == 200)
            {
                $link = $this->data['parsed_url']['scheme'].'://'.$this->data['parsed_url']['host'].'/'.$fav;
            } else if($this->Request($_GET['value'].'/'.$fav)->getStatusCode() == 200)
            {
                $link = $_GET['value'].'/'.$fav;
            } else {
                $link = '';
            }
        }


        return $this->Output($link, __FUNCTION__);
    }

    /**
     * Checks if there is a frame in the page
     *
     * @return array
     */
    public function Frameset()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $tags   = $dom->getElementsByTagName('frameset');
        $output = ['frameset' => [], 'frame' => []];
        foreach ($tags as $tag)
        {
            $output['frameset'][] = null;
        }

        $tags   = $dom->getElementsByTagName('frame');
        foreach ($tags as $tag)
        {
            $output['frame'][] = null;
        }

        return $this->Output([
            'frameset' => count($output['frameset']),
            'frame'    => count($output['frame'])
        ], __FUNCTION__);
    }

    /**
     * Finds Google Analytics code
     *
     * @return array
     */
    public function GoogleAnalytics()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $script = '';

        $tags   = $dom->getElementsByTagName('script');
        foreach ($tags as $tag)
        {
            if($tag->getAttribute('src'))
            {
                if (0 === strpos($tag->getAttribute('src'), '//'))
                {
                    $href     = $this->data['parsed_url']['scheme'] . ':'.$tag->getAttribute('src');
                } else if (0 !== strpos($tag->getAttribute('src'), 'http'))
                {
                    $path     = '/' . ltrim($tag->getAttribute('src'), '/');
                    $href     = $this->data['parsed_url']['scheme'] . '://';

                    if (isset($this->data['parsed_url']['user']) && isset($this->data['parsed_url']['pass']))
                    {
                        $href .= $this->data['parsed_url']['user'] . ':' . $this->data['parsed_url']['pass'] . '@';
                    }

                    $href     .= $this->data['parsed_url']['host'];

                    if (isset($this->data['parsed_url']['port']))
                    {
                        $href .= ':' . $this->data['parsed_url']['port'];
                    }
                    $href    .= $path;
                } else {
                    $href     = $tag->getAttribute('src');
                }

                $script .= $this->Request($href)->getBody()->getContents();
            } else {
                $script .= $tag->nodeValue;
            }
        }

        $ua_regex        = "/UA-[0-9]{5,}-[0-9]{1,}/";

        preg_match_all($ua_regex, $script, $ua_id);

        return $this->Output($ua_id[0][0], __FUNCTION__);
    }

    /**
     * Checks h1 HTML tag usage
     *
     * @return array
     */
    public function Header1()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $tags   = $dom->getElementsByTagName('h1');
        $output = array();
        foreach ($tags as $tag)
        {
            $output[] = $tag->nodeValue;
        }

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Checks h2 HTML tag usage
     *
     * @return array
     */
    public function Header2()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $tags   = $dom->getElementsByTagName('h2');
        $output = array();
        foreach ($tags as $tag)
        {
            $output[] = $tag->nodeValue;
        }

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Checks HTTPS
     *
     * @return array
     */
    public function Https()
    {
        $https = ($this->data['parsed_url']['scheme'] === 'https') ? true : false;

        return $this->Output($https, __FUNCTION__);
    }

    /**
     * Checks empty image alts
     *
     * @return array
     */
    public function ImageAlt()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $tags         = $dom->getElementsByTagName('img');
        $images       = array();
        $errors       = array();

        foreach($tags as $item)
        {
            $src      = $item->getAttribute('src');
            $alt      = $item->getAttribute('alt');

            $images[] = array(
                'src' => $src,
                'alt' => $alt
            );

            if($alt == '')
            {
                $link = $src;

                $errors[] = $link;
            }
        }

        $output       = array(
            'images'        => $images,
            'without_alt'   => $errors
        );

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Gets inbound links
     *
     * @return array
     */
    public function InboundLinks()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $tags   = $dom->getElementsByTagName('a');
        $output = array();

        foreach($tags as $item)
        {
            $link = $item->getAttribute('href');

            if($link != '' && strpos($link,'#') !== 0)
            {
                $link = parse_url($link);

                if(!isset($link['scheme']))
                {
                    $link['scheme'] = $this->data['parsed_url']['scheme'];
                }

                if(!isset($link['host']))
                {
                    $link['host'] = $this->data['parsed_url']['host'];
                }

                if(!isset($link['path']))
                {
                    $link['path'] = '';
                } else {
                    if(strpos($link['path'],'/') === false)
                    {
                        $link['path'] = '/'.$link['path'];
                    }
                }

                if(!isset($link['query']))
                {
                    $link['query'] = '';
                } else {
                    $link['query'] = '?'.$link['query'];
                }

                $output[] = $link['scheme'].'://'.$link['host'].$link['path'].$link['query'];
            }
        }

        foreach ($output as $key => $link)
        {
            if (parse_url($link)['host'] != $this->data['parsed_url']['host']) {
                unset($output[$key]);
                continue;
            }
        }

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Gets inbound links
     *
     * @return array
     */
    public function InlineCss()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $tags   = $dom->getElementsByTagName('style');
        $output = array();

        foreach($tags as $item)
        {
            $output[] = $this->helpers->Whitespace($item->textContent);
        }

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Gets meta description
     *
     * @return array
     */
    public function MetaDescription()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);
        $tags   = $dom->getElementsByTagName('meta');
        $output = '';
        foreach ($tags as $tag)
        {
            $content = $tag->getAttribute('content');
            if(strtolower($tag->getAttribute('name')) == 'description' && strlen($content) > 0)
            {
                $output = $content;
            }
        }

        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Gets meta title
     *
     * @return array
     */
    public function MetaTitle()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);
        $tags   = $dom->getElementsByTagName('title');
        $output = '';
        foreach ($tags as $tag)
        {
            if(isset($tag->nodeValue) && strlen($tag->nodeValue) > 0)
            {
                $output = $tag->nodeValue;
            }
            break;
        }


        return $this->Output($output, __FUNCTION__);
    }

    /**
     * Gets no-follow tag
     *
     * @return array
     */
    public function NofollowTag()
    {
        $dom    = $this->DOMDocument();
        $dom->loadHTML($this->data['content']);

        $tags   = $dom->getElementsByTagName('meta');
        $output = array();
        foreach ($tags as $tag)
        {
            if($tag->getAttribute('name') == 'robots')
            {
                $output[] = $tag->getAttribute('content');
            }
        }

        return $this->Output(in_array('nofollow',$output), __FUNCTION__);
    }

    /**
     * Checks HTML page compression
     *
     * @return array
     */
    public function PageCompression()
    {
        $output               = array();

        $output['actual']     = round(strlen($this->data['content']) / 1024,2);
        $output['possible']   = gzcompress($this->data['content'], 9);
        $output['possible']   = round(strlen($output['possible']) / 1024,2);
        $output['percentage'] = round((($output['possible'] * 100) / $output['actual']),2);
        $output['difference'] = round($output['actual'] - $output['possible'],2);

        return $this->Output($output, __FUNCTION__);
    }
}

1			<?php
2			namespace SEOCheckup;
3
4			/**
5			* @package seo-checkup
6			* @author Burak <[email protected]>
7			*/
8
9			use DOMDocument;
10			use DOMXPath;
11
12			class Analyze extends PreRequirements
13			{
14
15			/**
16			* @var array $data
17			*/
18			private $data;
19
20
21			/**
22			* @var Helpers $helpers
23			*/
24			private $helpers;
25
26			/**
27			* @var DOMDocument $dom
28			*/
29			private $dom;
30
31			/**
32			* Initialize from URL via Guzzle
33			*
34			* @param string $url
35			* @return $this
36			*/
37			public function __construct($url)
38			{
39			$response = $this->Request($url);
40
41			$this->data = [
42			'url' => $url,
43			'parsed_url' => parse_url($url),
44			'status' => $response->getStatusCode(),
45			'headers' => $response->getHeaders(),
46			'content' => $response->getBody()->getContents()
47			];
48
49			$this->helpers = new Helpers($this->data);
50
51			return $this;
52			}
53
54			/**
55			* Initialize DOMDocument
56			*
57			* @return DOMDocument
58			*/
59			private function DOMDocument()
60			{
61			libxml_use_internal_errors(true);
62
63			$this->dom = new DOMDocument();
64
65			return $this->dom;
66			}
67
68			/**
69			* Initialize DOMXPath
70			*
71			* @return DOMXPath
72			*/
73			private function DOMXPath()
74			{
75			return new DOMXPath($this->dom);
76			}
77
78			/**
79			* Standardizes output
80			*
81			* @param mixed $return
82			* @param string $service
83			* @return array
84			*/
85			private function Output($return, $service)
86			{
87			return [
88			'url' => $this->data['url'],
89			'status' => $this->data['status'],
90			'headers' => $this->data['headers'],
91			'service' => preg_replace("([A-Z])", " $0", $service),
92			'time' => time(),
93			'data' => $return
94			];
95			}
96
97			/**
98			* Analyze Broken Links in a page
99			*
100			* @return array
101			*/
102			public function BrokenLinks()
103			{
104			$dom = $this->DOMDocument();
105			$dom->loadHTML($this->data['content']);
106
107			$links = $this->helpers->GetLinks($dom);
108			$scan = ['errors' => [], 'passed' => []];
109			$i = 0;
110
111			foreach ($links as $key => $link)
112			{
113			$i++;
114
115			if($i >= 25)
116			break;
117
118			$status = $this->Request($link)->getStatusCode();
119
120			if(substr($status,0,1) > 3 && $status != 999)
121			$scan['errors']["HTTP {$status}"][] = $link;
122			else
123			$scan['passed']["HTTP {$status}"][] = $link;
124			}
125			return $this->Output([
126			'links' => $links,
127			'scanned' => $scan
128			], __FUNCTION__);
129			}
130
131			/**
132			* Checks header parameters if there is something about cache
133			*
134			* @return array
135			*/
136			public function Cache()
137			{
138			$output = ['headers' => [], 'html' => []];
139
140			foreach ($this->data['headers'] as $header)
141			{
142			foreach ($header as $item)
143			{
144			if(strpos(mb_strtolower($item),'cache') !== false)
145			{
146			$output['headers'][] = $item;
147			}
148			}
149			}
150
151			$dom = $this->DOMDocument();
152			$dom->loadHTML($this->data['content']);
153			$xpath = $this->DOMXPath();
154
155			foreach ($xpath->query('//comment()') as $comment)
156			{
157			if(strpos(mb_strtolower($comment->textContent),'cache') !== false)
158			{
159			$output['html'][] = '<!-- '.trim($comment->textContent).' //-->';
160			}
161			}
162			return $this->Output($output, __FUNCTION__);
163			}
164
165			/**
166			* Checks canonical tag
167			*
168			* @return array
169			*/
170			public function CanonicalTag()
171			{
172			$dom = $this->DOMDocument();
173			$dom->loadHTML($this->data['content']);
174			$output = array();
175			$links = $this->helpers->GetAttributes($dom, 'link', 'rel');
176
177			foreach($links as $item)
178			{
179			if($item == 'canonical')
180			{
181			$output[] = $item;
182			}
183			}
184
185			return $this->Output($output, __FUNCTION__);
186			}
187
188			/**
189			* Determines character set from headers
190			*
191			* @TODO: Use Regex instead of explode
192			* @return array
193			*/
194			public function CharacterSet()
195			{
196			$output = '';
197
198			foreach ($this->data['headers'] as $key => $header)
199			{
200			if($key == 'Content-Type')
201			{
202			$output = explode('=', explode(';',$header[0])[1])[1];
203			}
204			}
205			return $this->Output($output, __FUNCTION__);
206			}
207
208			/**
209			* Calculates code / content percentage
210			*
211			* @return array
212			*/
213			public function CodeContent()
214			{
215			$page_size = mb_strlen($this->data['content'], 'utf8');
216			$dom = $this->DOMDocument();
217			$dom->loadHTML($this->data['content']);
218
219			$script = $dom->getElementsByTagName('script');
220			$remove = array();
221
222			foreach ($script as $item)
223			{
224			$remove[] = $item;
225			}
226
227			foreach ($remove as $item)
228			{
229			$item->parentNode->removeChild($item);
230			}
231
232			$page = $dom->saveHTML();
233			$content_size = mb_strlen(strip_tags($page), 'utf8');
234			$rate = (round($content_size / $page_size * 100));
235			$output = array(
236			'page_size' => $page_size,
237			'code_size' => ($page_size - $content_size),
238			'content_size' => $content_size,
239			'content' => $this->helpers->Whitespace(strip_tags($page)),
240			'percentage' => "$rate%"
241			);
242
243			return $this->Output($output, __FUNCTION__);
244			}
245
246			/**
247			* Checks deprecated HTML tag usage
248			*
249			* @return array
250			*/
251			public function DeprecatedHTML()
252			{
253			$dom = $this->DOMDocument();
254			$dom->loadHTML($this->data['content']);
255
256			$deprecated_tags = array(
257			'acronym',
258			'applet',
259			'basefont',
260			'big',
261			'center',
262			'dir',
263			'font',
264			'frame',
265			'frameset',
266			'isindex',
267			'noframes',
268			's',
269			'strike',
270			'tt',
271			'u'
272			);
273
274			$output = array();
275
276			foreach ($deprecated_tags as $tag)
277			{
278			$tags = $dom->getElementsByTagName($tag);
279
280			if($tags->length > 0)
281			{
282			$output[$tag] = $tags->length;
283			}
284			}
285
286			return $this->Output($output, __FUNCTION__);
287			}
288
289			/**
290			* Determines length of the domain
291			*
292			* @return array
293			*/
294			public function DomainLength()
295			{
296			$domain = explode('.',$this->data['parsed_url']['host']);
297
298			array_pop($domain);
299
300			$domain = implode('.',$domain);
301
302			return $this->Output(strlen($domain), __FUNCTION__);
303			}
304
305			/**
306			* Looks for a favicon
307			*
308			* @return array
309			*/
310			public function Favicon()
311			{
312			$ico = "{$this->data['parsed_url']['scheme']}://{$this->data['parsed_url']['host']}/favicon.ico";
313			$link = '';
314
315			if($this->Request($ico)->getStatusCode() === 200)
316			{
317			$link = $ico;
318			} else {
319
320			$dom = $this->DOMDocument();
321			$dom->loadHTML($this->data['content']);
322
323			$tags = $dom->getElementsByTagName('link');
324			$fav = null;
325
326			foreach ($tags as $tag)
327			{
328			if($tag->getAttribute('rel') == 'shortcut icon' OR $tag->getAttribute('rel') == 'icon')
329			{
330			$fav = $tag->getAttribute('href');
331			break;
332			}
333			}
334
335			if (!filter_var($fav, FILTER_VALIDATE_URL) === false && $this->Request($fav)->getStatusCode() == 200)
336			{
337			$link = $fav;
338			} else if($this->Request($this->data['parsed_url']['scheme'].'://'.$this->data['parsed_url']['host'].'/'.$fav)->getStatusCode() == 200)
339			{
340			$link = $this->data['parsed_url']['scheme'].'://'.$this->data['parsed_url']['host'].'/'.$fav;
341			} else if($this->Request($_GET['value'].'/'.$fav)->getStatusCode() == 200)
342			{
343			$link = $_GET['value'].'/'.$fav;
344			} else {
345			$link = '';
346			}
347			}
348
349
350			return $this->Output($link, __FUNCTION__);
351			}
352
353			/**
354			* Checks if there is a frame in the page
355			*
356			* @return array
357			*/
358			public function Frameset()
359			{
360			$dom = $this->DOMDocument();
361			$dom->loadHTML($this->data['content']);
362
363			$tags = $dom->getElementsByTagName('frameset');
364			$output = ['frameset' => [], 'frame' => []];
365			foreach ($tags as $tag)
366			{
367			$output['frameset'][] = null;
368			}
369
370			$tags = $dom->getElementsByTagName('frame');
371			foreach ($tags as $tag)
372			{
373			$output['frame'][] = null;
374			}
375
376			return $this->Output([
377			'frameset' => count($output['frameset']),
378			'frame' => count($output['frame'])
379			], __FUNCTION__);
380			}
381
382			/**
383			* Finds Google Analytics code
384			*
385			* @return array
386			*/
387			public function GoogleAnalytics()
388			{
389			$dom = $this->DOMDocument();
390			$dom->loadHTML($this->data['content']);
391
392			$script = '';
393
394			$tags = $dom->getElementsByTagName('script');
395			foreach ($tags as $tag)
396			{
397			if($tag->getAttribute('src'))
398			{
399			if (0 === strpos($tag->getAttribute('src'), '//'))
400			{
401			$href = $this->data['parsed_url']['scheme'] . ':'.$tag->getAttribute('src');
402			} else if (0 !== strpos($tag->getAttribute('src'), 'http'))
403			{
404			$path = '/' . ltrim($tag->getAttribute('src'), '/');
405			$href = $this->data['parsed_url']['scheme'] . '://';
406
407			if (isset($this->data['parsed_url']['user']) && isset($this->data['parsed_url']['pass']))
408			{
409			$href .= $this->data['parsed_url']['user'] . ':' . $this->data['parsed_url']['pass'] . '@';
410			}
411
412			$href .= $this->data['parsed_url']['host'];
413
414			if (isset($this->data['parsed_url']['port']))
415			{
416			$href .= ':' . $this->data['parsed_url']['port'];
417			}
418			$href .= $path;
419			} else {
420			$href = $tag->getAttribute('src');
421			}
422
423			$script .= $this->Request($href)->getBody()->getContents();
424			} else {
425			$script .= $tag->nodeValue;
426			}
427			}
428
429			$ua_regex = "/UA-[0-9]{5,}-[0-9]{1,}/";
430
431			preg_match_all($ua_regex, $script, $ua_id);
432
433			return $this->Output($ua_id[0][0], __FUNCTION__);
434			}
435
436			/**
437			* Checks h1 HTML tag usage
438			*
439			* @return array
440			*/
441			public function Header1()
442			{
443			$dom = $this->DOMDocument();
444			$dom->loadHTML($this->data['content']);
445
446			$tags = $dom->getElementsByTagName('h1');
447			$output = array();
448			foreach ($tags as $tag)
449			{
450			$output[] = $tag->nodeValue;
451			}
452
453			return $this->Output($output, __FUNCTION__);
454			}
455
456			/**
457			* Checks h2 HTML tag usage
458			*
459			* @return array
460			*/
461			public function Header2()
462			{
463			$dom = $this->DOMDocument();
464			$dom->loadHTML($this->data['content']);
465
466			$tags = $dom->getElementsByTagName('h2');
467			$output = array();
468			foreach ($tags as $tag)
469			{
470			$output[] = $tag->nodeValue;
471			}
472
473			return $this->Output($output, __FUNCTION__);
474			}
475
476			/**
477			* Checks HTTPS
478			*
479			* @return array
480			*/
481			public function Https()
482			{
483			$https = ($this->data['parsed_url']['scheme'] === 'https') ? true : false;
484
485			return $this->Output($https, __FUNCTION__);
486			}
487
488			/**
489			* Checks empty image alts
490			*
491			* @return array
492			*/
493			public function ImageAlt()
494			{
495			$dom = $this->DOMDocument();
496			$dom->loadHTML($this->data['content']);
497
498			$tags = $dom->getElementsByTagName('img');
499			$images = array();
500			$errors = array();
501
502			foreach($tags as $item)
503			{
504			$src = $item->getAttribute('src');
505			$alt = $item->getAttribute('alt');
506
507			$images[] = array(
508			'src' => $src,
509			'alt' => $alt
510			);
511
512			if($alt == '')
513			{
514			$link = $src;
515
516			$errors[] = $link;
517			}
518			}
519
520			$output = array(
521			'images' => $images,
522			'without_alt' => $errors
523			);
524
525			return $this->Output($output, __FUNCTION__);
526			}
527
528			/**
529			* Gets inbound links
530			*
531			* @return array
532			*/
533			public function InboundLinks()
534			{
535			$dom = $this->DOMDocument();
536			$dom->loadHTML($this->data['content']);
537
538			$tags = $dom->getElementsByTagName('a');
539			$output = array();
540
541			foreach($tags as $item)
542			{
543			$link = $item->getAttribute('href');
544
545			if($link != '' && strpos($link,'#') !== 0)
546			{
547			$link = parse_url($link);
548
549			if(!isset($link['scheme']))
550			{
551			$link['scheme'] = $this->data['parsed_url']['scheme'];
552			}
553
554			if(!isset($link['host']))
555			{
556			$link['host'] = $this->data['parsed_url']['host'];
557			}
558
559			if(!isset($link['path']))
560			{
561			$link['path'] = '';
562			} else {
563			if(strpos($link['path'],'/') === false)
564			{
565			$link['path'] = '/'.$link['path'];
566			}
567			}
568
569			if(!isset($link['query']))
570			{
571			$link['query'] = '';
572			} else {
573			$link['query'] = '?'.$link['query'];
574			}
575
576			$output[] = $link['scheme'].'://'.$link['host'].$link['path'].$link['query'];
577			}
578			}
579
580			foreach ($output as $key => $link)
581			{
582			if (parse_url($link)['host'] != $this->data['parsed_url']['host']) {
583			unset($output[$key]);
584			continue;
585			}
586			}
587
588			return $this->Output($output, __FUNCTION__);
589			}
590
591			/**
592			* Gets inbound links
593			*
594			* @return array
595			*/
596			public function InlineCss()
597			{
598			$dom = $this->DOMDocument();
599			$dom->loadHTML($this->data['content']);
600
601			$tags = $dom->getElementsByTagName('style');
602			$output = array();
603
604			foreach($tags as $item)
605			{
606			$output[] = $this->helpers->Whitespace($item->textContent);
607			}
608
609			return $this->Output($output, __FUNCTION__);
610			}
611
612			/**
613			* Gets meta description
614			*
615			* @return array
616			*/
617			public function MetaDescription()
618			{
619			$dom = $this->DOMDocument();
620			$dom->loadHTML($this->data['content']);
621			$tags = $dom->getElementsByTagName('meta');
622			$output = '';
623			foreach ($tags as $tag)
624			{
625			$content = $tag->getAttribute('content');
626			if(strtolower($tag->getAttribute('name')) == 'description' && strlen($content) > 0)
627			{
628			$output = $content;
629			}
630			}
631
632			return $this->Output($output, __FUNCTION__);
633			}
634
635			/**
636			* Gets meta title
637			*
638			* @return array
639			*/
640			public function MetaTitle()
641			{
642			$dom = $this->DOMDocument();
643			$dom->loadHTML($this->data['content']);
644			$tags = $dom->getElementsByTagName('title');
645			$output = '';
646			foreach ($tags as $tag)
647			{
648			if(isset($tag->nodeValue) && strlen($tag->nodeValue) > 0)
649			{
650			$output = $tag->nodeValue;
651			}
652			break;
653			}
654
655
656			return $this->Output($output, __FUNCTION__);
657			}
658
659			/**
660			* Gets no-follow tag
661			*
662			* @return array
663			*/
664			public function NofollowTag()
665			{
666			$dom = $this->DOMDocument();
667			$dom->loadHTML($this->data['content']);
668
669			$tags = $dom->getElementsByTagName('meta');
670			$output = array();
671			foreach ($tags as $tag)
672			{
673			if($tag->getAttribute('name') == 'robots')
674			{
675			$output[] = $tag->getAttribute('content');
676			}
677			}
678
679			return $this->Output(in_array('nofollow',$output), __FUNCTION__);
680			}
681
682			/**
683			* Checks HTML page compression
684			*
685			* @return array
686			*/
687			public function PageCompression()
688			{
689			$output = array();
690
691			$output['actual'] = round(strlen($this->data['content']) / 1024,2);
692			$output['possible'] = gzcompress($this->data['content'], 9);
693			$output['possible'] = round(strlen($output['possible']) / 1024,2);
694			$output['percentage'] = round((($output['possible'] * 100) / $output['actual']),2);
695			$output['difference'] = round($output['actual'] - $output['possible'],2);
696
697			return $this->Output($output, __FUNCTION__);
698			}
699			}

frnxstd / seo-checkup

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