frnxstd /
seo-checkup
| Total Complexity | 110 |
| Total Lines | 874 |
| Duplicated Lines | 0 % |
| Changes | 5 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Analyze often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Analyze, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 12 | class Analyze extends PreRequirements |
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| 13 | { |
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| 14 | |||
| 15 | /** |
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| 16 | * @var array $data |
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| 17 | */ |
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| 18 | private $data; |
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| 19 | |||
| 20 | |||
| 21 | /** |
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| 22 | * @var Helpers $helpers |
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| 23 | */ |
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| 24 | private $helpers; |
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| 25 | |||
| 26 | /** |
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| 27 | * @var DOMDocument $dom |
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| 28 | */ |
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| 29 | private $dom; |
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| 30 | |||
| 31 | /** |
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| 32 | * Initialize from URL via Guzzle |
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| 33 | * |
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| 34 | * @param string $url |
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| 35 | * @return $this |
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| 36 | */ |
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| 37 | public function __construct($url) |
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| 38 | { |
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| 39 | $started_on = microtime(true); |
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| 40 | $response = $this->Request($url); |
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| 41 | |||
| 42 | $this->data = [ |
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| 43 | 'url' => $url, |
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| 44 | 'parsed_url' => parse_url($url), |
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| 45 | 'status' => $response->getStatusCode(), |
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| 46 | 'headers' => $response->getHeaders(), |
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| 47 | 'page_speed' => number_format(( microtime(true) - $started_on), 4), |
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| 48 | 'content' => $response->getBody()->getContents() |
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| 49 | ]; |
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| 50 | |||
| 51 | $this->helpers = new Helpers($this->data); |
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| 52 | |||
| 53 | return $this; |
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| 54 | } |
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| 55 | |||
| 56 | /** |
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| 57 | * Initialize DOMDocument |
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| 58 | * |
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| 59 | * @return DOMDocument |
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| 60 | */ |
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| 61 | private function DOMDocument() |
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| 62 | { |
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| 63 | libxml_use_internal_errors(true); |
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| 64 | |||
| 65 | $this->dom = new DOMDocument(); |
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| 66 | |||
| 67 | return $this->dom; |
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| 68 | } |
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| 69 | |||
| 70 | /** |
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| 71 | * Initialize DOMXPath |
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| 72 | * |
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| 73 | * @return DOMXPath |
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| 74 | */ |
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| 75 | private function DOMXPath() |
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| 76 | { |
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| 77 | return new DOMXPath($this->dom); |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * Standardizes output |
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| 82 | * |
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| 83 | * @param mixed $return |
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| 84 | * @param string $service |
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| 85 | * @return array |
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| 86 | */ |
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| 87 | private function Output($return, $service) |
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| 88 | { |
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| 89 | return [ |
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| 90 | 'url' => $this->data['url'], |
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| 91 | 'status' => $this->data['status'], |
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| 92 | 'headers' => $this->data['headers'], |
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| 93 | 'service' => preg_replace("([A-Z])", " $0", $service), |
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| 94 | 'time' => time(), |
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| 95 | 'data' => $return |
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| 96 | ]; |
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| 97 | } |
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| 98 | |||
| 99 | /** |
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| 100 | * Analyze Broken Links in a page |
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| 101 | * |
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| 102 | * @return array |
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| 103 | */ |
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| 104 | public function BrokenLinks() |
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| 105 | { |
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| 106 | $dom = $this->DOMDocument(); |
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| 107 | $dom->loadHTML($this->data['content']); |
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| 108 | |||
| 109 | $links = $this->helpers->GetLinks($dom); |
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| 110 | $scan = ['errors' => [], 'passed' => []]; |
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| 111 | $i = 0; |
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| 112 | |||
| 113 | foreach ($links as $key => $link) |
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| 114 | { |
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| 115 | $i++; |
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| 116 | |||
| 117 | if($i >= 25) |
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| 118 | break; |
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| 119 | |||
| 120 | $status = $this->Request($link)->getStatusCode(); |
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| 121 | |||
| 122 | if(substr($status,0,1) > 3 && $status != 999) |
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| 123 | $scan['errors']["HTTP {$status}"][] = $link; |
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| 124 | else |
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| 125 | $scan['passed']["HTTP {$status}"][] = $link; |
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| 126 | } |
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| 127 | return $this->Output([ |
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| 128 | 'links' => $links, |
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| 129 | 'scanned' => $scan |
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| 130 | ], __FUNCTION__); |
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| 131 | } |
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| 132 | |||
| 133 | /** |
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| 134 | * Checks header parameters if there is something about cache |
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| 135 | * |
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| 136 | * @return array |
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| 137 | */ |
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| 138 | public function Cache() |
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| 139 | { |
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| 140 | $output = ['headers' => [], 'html' => []]; |
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| 141 | |||
| 142 | foreach ($this->data['headers'] as $header) |
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| 143 | { |
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| 144 | foreach ($header as $item) |
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| 145 | { |
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| 146 | if(strpos(mb_strtolower($item),'cache') !== false) |
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| 147 | { |
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| 148 | $output['headers'][] = $item; |
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| 149 | } |
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| 150 | } |
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| 151 | } |
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| 152 | |||
| 153 | $dom = $this->DOMDocument(); |
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| 154 | $dom->loadHTML($this->data['content']); |
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| 155 | $xpath = $this->DOMXPath(); |
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| 156 | |||
| 157 | foreach ($xpath->query('//comment()') as $comment) |
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| 158 | { |
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| 159 | if(strpos(mb_strtolower($comment->textContent),'cache') !== false) |
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| 160 | { |
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| 161 | $output['html'][] = '<!-- '.trim($comment->textContent).' //-->'; |
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| 162 | } |
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| 163 | } |
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| 164 | return $this->Output($output, __FUNCTION__); |
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| 165 | } |
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| 166 | |||
| 167 | /** |
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| 168 | * Checks canonical tag |
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| 169 | * |
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| 170 | * @return array |
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| 171 | */ |
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| 172 | public function CanonicalTag() |
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| 173 | { |
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| 174 | $dom = $this->DOMDocument(); |
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| 175 | $dom->loadHTML($this->data['content']); |
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| 176 | $output = array(); |
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| 177 | $links = $this->helpers->GetAttributes($dom, 'link', 'rel'); |
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| 178 | |||
| 179 | foreach($links as $item) |
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| 180 | { |
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| 181 | if($item == 'canonical') |
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| 182 | { |
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| 183 | $output[] = $item; |
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| 184 | } |
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| 185 | } |
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| 186 | |||
| 187 | return $this->Output($output, __FUNCTION__); |
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| 188 | } |
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| 189 | |||
| 190 | /** |
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| 191 | * Determines character set from headers |
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| 192 | * |
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| 193 | * @TODO: Use Regex instead of explode |
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| 194 | * @return array |
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| 195 | */ |
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| 196 | public function CharacterSet() |
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| 197 | { |
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| 198 | $output = ''; |
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| 199 | |||
| 200 | foreach ($this->data['headers'] as $key => $header) |
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| 201 | { |
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| 202 | if($key == 'Content-Type') |
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| 203 | { |
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| 204 | $output = explode('=', explode(';',$header[0])[1])[1]; |
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| 205 | } |
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| 206 | } |
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| 207 | return $this->Output($output, __FUNCTION__); |
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| 208 | } |
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| 209 | |||
| 210 | /** |
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| 211 | * Calculates code / content percentage |
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| 212 | * |
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| 213 | * @return array |
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| 214 | */ |
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| 215 | public function CodeContent() |
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| 216 | { |
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| 217 | $page_size = mb_strlen($this->data['content'], 'utf8'); |
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| 218 | $dom = $this->DOMDocument(); |
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| 219 | $dom->loadHTML($this->data['content']); |
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| 220 | |||
| 221 | $script = $dom->getElementsByTagName('script'); |
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| 222 | $remove = array(); |
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| 223 | |||
| 224 | foreach ($script as $item) |
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| 225 | { |
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| 226 | $remove[] = $item; |
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| 227 | } |
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| 228 | |||
| 229 | foreach ($remove as $item) |
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| 230 | { |
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| 231 | $item->parentNode->removeChild($item); |
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| 232 | } |
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| 233 | |||
| 234 | $page = $dom->saveHTML(); |
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| 235 | $content_size = mb_strlen(strip_tags($page), 'utf8'); |
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| 236 | $rate = (round($content_size / $page_size * 100)); |
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| 237 | $output = array( |
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| 238 | 'page_size' => $page_size, |
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| 239 | 'code_size' => ($page_size - $content_size), |
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| 240 | 'content_size' => $content_size, |
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| 241 | 'content' => $this->helpers->Whitespace(strip_tags($page)), |
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| 242 | 'percentage' => "$rate%" |
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| 243 | ); |
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| 244 | |||
| 245 | return $this->Output($output, __FUNCTION__); |
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| 246 | } |
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| 247 | |||
| 248 | /** |
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| 249 | * Checks deprecated HTML tag usage |
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| 250 | * |
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| 251 | * @return array |
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| 252 | */ |
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| 253 | public function DeprecatedHTML() |
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| 254 | { |
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| 255 | $dom = $this->DOMDocument(); |
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| 256 | $dom->loadHTML($this->data['content']); |
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| 257 | |||
| 258 | $deprecated_tags = array( |
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| 259 | 'acronym', |
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| 260 | 'applet', |
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| 261 | 'basefont', |
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| 262 | 'big', |
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| 263 | 'center', |
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| 264 | 'dir', |
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| 265 | 'font', |
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| 266 | 'frame', |
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| 267 | 'frameset', |
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| 268 | 'isindex', |
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| 269 | 'noframes', |
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| 270 | 's', |
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| 271 | 'strike', |
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| 272 | 'tt', |
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| 273 | 'u' |
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| 274 | ); |
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| 275 | |||
| 276 | $output = array(); |
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| 277 | |||
| 278 | foreach ($deprecated_tags as $tag) |
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| 279 | { |
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| 280 | $tags = $dom->getElementsByTagName($tag); |
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| 281 | |||
| 282 | if($tags->length > 0) |
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| 283 | { |
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| 284 | $output[$tag] = $tags->length; |
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| 285 | } |
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| 286 | } |
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| 287 | |||
| 288 | return $this->Output($output, __FUNCTION__); |
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| 289 | } |
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| 290 | |||
| 291 | /** |
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| 292 | * Determines length of the domain |
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| 293 | * |
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| 294 | * @return array |
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| 295 | */ |
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| 296 | public function DomainLength() |
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| 305 | } |
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| 306 | |||
| 307 | /** |
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| 308 | * Looks for a favicon |
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| 309 | * |
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| 310 | * @return array |
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| 311 | */ |
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| 312 | public function Favicon() |
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| 353 | } |
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| 354 | |||
| 355 | /** |
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| 356 | * Checks if there is a frame in the page |
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| 357 | * |
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| 358 | * @return array |
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| 359 | */ |
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| 360 | public function Frameset() |
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| 361 | { |
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| 362 | $dom = $this->DOMDocument(); |
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| 363 | $dom->loadHTML($this->data['content']); |
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| 364 | |||
| 365 | $tags = $dom->getElementsByTagName('frameset'); |
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| 366 | $output = ['frameset' => [], 'frame' => []]; |
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| 367 | foreach ($tags as $tag) |
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| 368 | { |
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| 369 | $output['frameset'][] = null; |
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| 370 | } |
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| 371 | |||
| 372 | $tags = $dom->getElementsByTagName('frame'); |
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| 373 | foreach ($tags as $tag) |
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| 374 | { |
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| 375 | $output['frame'][] = null; |
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| 376 | } |
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| 377 | |||
| 378 | return $this->Output([ |
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| 379 | 'frameset' => count($output['frameset']), |
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| 380 | 'frame' => count($output['frame']) |
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| 381 | ], __FUNCTION__); |
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| 382 | } |
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| 383 | |||
| 384 | /** |
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| 385 | * Finds Google Analytics code |
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| 386 | * |
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| 387 | * @return array |
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| 388 | */ |
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| 389 | public function GoogleAnalytics() |
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| 390 | { |
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| 391 | $dom = $this->DOMDocument(); |
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| 392 | $dom->loadHTML($this->data['content']); |
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| 393 | |||
| 394 | $script = ''; |
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| 395 | |||
| 396 | $tags = $dom->getElementsByTagName('script'); |
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| 397 | foreach ($tags as $tag) |
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| 398 | { |
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| 399 | if($tag->getAttribute('src')) |
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| 400 | { |
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| 401 | if (0 === strpos($tag->getAttribute('src'), '//')) |
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| 402 | { |
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| 403 | $href = $this->data['parsed_url']['scheme'] . ':'.$tag->getAttribute('src'); |
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| 404 | } else if (0 !== strpos($tag->getAttribute('src'), 'http')) |
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| 405 | { |
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| 406 | $path = '/' . ltrim($tag->getAttribute('src'), '/'); |
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| 407 | $href = $this->data['parsed_url']['scheme'] . '://'; |
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| 408 | |||
| 409 | if (isset($this->data['parsed_url']['user']) && isset($this->data['parsed_url']['pass'])) |
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| 410 | { |
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| 411 | $href .= $this->data['parsed_url']['user'] . ':' . $this->data['parsed_url']['pass'] . '@'; |
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| 412 | } |
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| 413 | |||
| 414 | $href .= $this->data['parsed_url']['host']; |
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| 415 | |||
| 416 | if (isset($this->data['parsed_url']['port'])) |
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| 417 | { |
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| 418 | $href .= ':' . $this->data['parsed_url']['port']; |
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| 419 | } |
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| 420 | $href .= $path; |
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| 421 | } else { |
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| 422 | $href = $tag->getAttribute('src'); |
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| 423 | } |
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| 424 | |||
| 425 | $script .= $this->Request($href)->getBody()->getContents(); |
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| 426 | } else { |
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| 427 | $script .= $tag->nodeValue; |
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| 428 | } |
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| 429 | } |
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| 430 | |||
| 431 | $ua_regex = "/UA-[0-9]{5,}-[0-9]{1,}/"; |
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| 432 | |||
| 433 | preg_match_all($ua_regex, $script, $ua_id); |
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| 434 | |||
| 435 | return $this->Output($ua_id[0][0], __FUNCTION__); |
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| 436 | } |
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| 437 | |||
| 438 | /** |
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| 439 | * Checks h1 HTML tag usage |
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| 440 | * |
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| 441 | * @return array |
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| 442 | */ |
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| 443 | public function Header1() |
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| 444 | { |
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| 445 | $dom = $this->DOMDocument(); |
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| 446 | $dom->loadHTML($this->data['content']); |
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| 447 | |||
| 448 | $tags = $dom->getElementsByTagName('h1'); |
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| 449 | $output = array(); |
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| 450 | foreach ($tags as $tag) |
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| 451 | { |
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| 452 | $output[] = $tag->nodeValue; |
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| 453 | } |
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| 454 | |||
| 455 | return $this->Output($output, __FUNCTION__); |
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| 456 | } |
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| 457 | |||
| 458 | /** |
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| 459 | * Checks h2 HTML tag usage |
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| 460 | * |
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| 461 | * @return array |
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| 462 | */ |
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| 463 | public function Header2() |
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| 464 | { |
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| 465 | $dom = $this->DOMDocument(); |
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| 466 | $dom->loadHTML($this->data['content']); |
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| 467 | |||
| 468 | $tags = $dom->getElementsByTagName('h2'); |
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| 469 | $output = array(); |
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| 470 | foreach ($tags as $tag) |
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| 471 | { |
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| 472 | $output[] = $tag->nodeValue; |
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| 473 | } |
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| 474 | |||
| 475 | return $this->Output($output, __FUNCTION__); |
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| 476 | } |
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| 477 | |||
| 478 | /** |
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| 479 | * Checks HTTPS |
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| 480 | * |
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| 481 | * @return array |
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| 482 | */ |
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| 483 | public function Https() |
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| 484 | { |
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| 485 | $https = ($this->data['parsed_url']['scheme'] === 'https') ? true : false; |
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| 486 | |||
| 487 | return $this->Output($https, __FUNCTION__); |
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| 488 | } |
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| 489 | |||
| 490 | /** |
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| 491 | * Checks empty image alts |
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| 492 | * |
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| 493 | * @return array |
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| 494 | */ |
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| 495 | public function ImageAlt() |
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| 496 | { |
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| 497 | $dom = $this->DOMDocument(); |
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| 498 | $dom->loadHTML($this->data['content']); |
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| 499 | |||
| 500 | $tags = $dom->getElementsByTagName('img'); |
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| 501 | $images = array(); |
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| 502 | $errors = array(); |
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| 503 | |||
| 504 | foreach($tags as $item) |
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| 505 | { |
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| 506 | $src = $item->getAttribute('src'); |
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| 507 | $alt = $item->getAttribute('alt'); |
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| 508 | |||
| 509 | $images[] = array( |
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| 510 | 'src' => $src, |
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| 511 | 'alt' => $alt |
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| 512 | ); |
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| 513 | |||
| 514 | if($alt == '') |
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| 515 | { |
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| 516 | $link = $src; |
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| 517 | |||
| 518 | $errors[] = $link; |
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| 519 | } |
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| 520 | } |
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| 521 | |||
| 522 | $output = array( |
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| 523 | 'images' => $images, |
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| 524 | 'without_alt' => $errors |
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| 525 | ); |
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| 526 | |||
| 527 | return $this->Output($output, __FUNCTION__); |
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| 528 | } |
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| 529 | |||
| 530 | /** |
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| 531 | * Gets inbound links |
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| 532 | * |
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| 533 | * @return array |
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| 534 | */ |
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| 535 | public function InboundLinks() |
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| 536 | { |
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| 537 | $dom = $this->DOMDocument(); |
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| 538 | $dom->loadHTML($this->data['content']); |
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| 539 | |||
| 540 | $tags = $dom->getElementsByTagName('a'); |
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| 541 | $output = array(); |
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| 542 | |||
| 543 | foreach($tags as $item) |
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| 544 | { |
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| 545 | $link = $item->getAttribute('href'); |
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| 546 | |||
| 547 | if($link != '' && strpos($link,'#') !== 0) |
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| 548 | { |
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| 549 | $link = parse_url($link); |
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| 550 | |||
| 551 | if(!isset($link['scheme'])) |
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| 552 | { |
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| 553 | $link['scheme'] = $this->data['parsed_url']['scheme']; |
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| 554 | } |
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| 555 | |||
| 556 | if(!isset($link['host'])) |
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| 557 | { |
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| 558 | $link['host'] = $this->data['parsed_url']['host']; |
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| 559 | } |
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| 560 | |||
| 561 | if(!isset($link['path'])) |
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| 562 | { |
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| 563 | $link['path'] = ''; |
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| 564 | } else { |
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| 565 | if(strpos($link['path'],'/') === false) |
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| 566 | { |
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| 567 | $link['path'] = '/'.$link['path']; |
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| 568 | } |
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| 569 | } |
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| 570 | |||
| 571 | if(!isset($link['query'])) |
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| 572 | { |
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| 573 | $link['query'] = ''; |
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| 574 | } else { |
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| 575 | $link['query'] = '?'.$link['query']; |
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| 576 | } |
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| 577 | |||
| 578 | $output[] = $link['scheme'].'://'.$link['host'].$link['path'].$link['query']; |
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| 579 | } |
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| 580 | } |
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| 581 | |||
| 582 | foreach ($output as $key => $link) |
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| 583 | { |
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| 584 | if (parse_url($link)['host'] != $this->data['parsed_url']['host']) { |
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| 585 | unset($output[$key]); |
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| 586 | continue; |
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| 587 | } |
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| 588 | } |
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| 589 | |||
| 590 | return $this->Output($output, __FUNCTION__); |
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| 591 | } |
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| 592 | |||
| 593 | /** |
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| 594 | * Gets inbound links |
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| 595 | * |
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| 596 | * @return array |
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| 597 | */ |
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| 598 | public function InlineCss() |
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| 612 | } |
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| 613 | |||
| 614 | /** |
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| 615 | * Gets meta description |
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| 616 | * |
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| 617 | * @return array |
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| 618 | */ |
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| 619 | public function MetaDescription() |
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| 620 | { |
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| 621 | $dom = $this->DOMDocument(); |
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| 622 | $dom->loadHTML($this->data['content']); |
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| 623 | $tags = $dom->getElementsByTagName('meta'); |
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| 624 | $output = ''; |
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| 625 | foreach ($tags as $tag) |
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| 626 | { |
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| 627 | $content = $tag->getAttribute('content'); |
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| 628 | if(strtolower($tag->getAttribute('name')) == 'description' && strlen($content) > 0) |
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| 629 | { |
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| 630 | $output = $content; |
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| 631 | } |
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| 632 | } |
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| 633 | |||
| 634 | return $this->Output($output, __FUNCTION__); |
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| 635 | } |
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| 636 | |||
| 637 | /** |
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| 638 | * Gets meta title |
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| 639 | * |
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| 640 | * @return array |
||
| 641 | */ |
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| 642 | public function MetaTitle() |
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| 659 | } |
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| 660 | |||
| 661 | /** |
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| 662 | * Gets no-follow tag |
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| 663 | * |
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| 664 | * @return array |
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| 665 | */ |
||
| 666 | public function NofollowTag() |
||
| 667 | { |
||
| 668 | $dom = $this->DOMDocument(); |
||
| 669 | $dom->loadHTML($this->data['content']); |
||
| 670 | |||
| 671 | $tags = $dom->getElementsByTagName('meta'); |
||
| 672 | $output = array(); |
||
| 673 | foreach ($tags as $tag) |
||
| 674 | { |
||
| 675 | if($tag->getAttribute('name') == 'robots') |
||
| 676 | { |
||
| 677 | $output[] = $tag->getAttribute('content'); |
||
| 678 | } |
||
| 679 | } |
||
| 680 | |||
| 681 | return $this->Output(in_array('nofollow',$output), __FUNCTION__); |
||
| 682 | } |
||
| 683 | |||
| 684 | /** |
||
| 685 | * Gets no-index tag |
||
| 686 | * |
||
| 687 | * @return array |
||
| 688 | */ |
||
| 689 | public function NoindexTag() |
||
| 705 | } |
||
| 706 | |||
| 707 | /** |
||
| 708 | * Counts objects in a page |
||
| 709 | * |
||
| 710 | * @return array |
||
| 711 | */ |
||
| 712 | public function ObjectCount() |
||
| 713 | { |
||
| 714 | $dom = $this->DOMDocument(); |
||
| 754 | } |
||
| 755 | |||
| 756 | /** |
||
| 757 | * Calculates page speed |
||
| 758 | * |
||
| 759 | * @return array |
||
| 760 | */ |
||
| 761 | public function PageSpeed() |
||
| 764 | } |
||
| 765 | |||
| 766 | /** |
||
| 767 | * Checks if there is some plaintext email |
||
| 768 | * |
||
| 769 | * @return array |
||
| 770 | */ |
||
| 771 | public function PlaintextEmail() |
||
| 822 | } |
||
| 823 | |||
| 824 | /** |
||
| 825 | * Checks HTML page compression |
||
| 826 | * |
||
| 827 | * @return array |
||
| 828 | */ |
||
| 829 | public function PageCompression() |
||
| 840 | } |
||
| 841 | |||
| 842 | /** |
||
| 843 | * Checks robots.txt |
||
| 844 | * |
||
| 845 | * @return array |
||
| 846 | */ |
||
| 847 | public function RobotsFile() |
||
| 859 | } |
||
| 860 | |||
| 861 | /** |
||
| 862 | * Server signature |
||
| 863 | * |
||
| 864 | * @return array |
||
| 865 | */ |
||
| 866 | public function ServerSignature() |
||
| 886 | } |
||
| 887 | } |
