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<?php |
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namespace SocialLinks\Providers; |
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use SocialLinks\Page; |
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use DOMDocument; |
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/** |
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* Base class extended by all providers. |
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* |
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* @property string $shareUrl |
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* @property null|int $shareCount |
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*/ |
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abstract class ProviderBase |
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{ |
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protected $page; |
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const RFC1738 = 1; |
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const RFC3986 = 2; |
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/** |
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* Constructor. |
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* |
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* @param Page $page |
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*/ |
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public function __construct(Page $page) |
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{ |
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$this->page = $page; |
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} |
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/** |
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* Magic method to calculate and store the properties. |
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*/ |
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public function __get($key) |
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{ |
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switch ($key) { |
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case 'shareUrl': |
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return $this->shareUrl = $this->shareUrl(); |
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case 'shareCount': |
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$request = $this->shareCountRequest(); |
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if ($request !== null) { |
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$response = curl_exec($request) ?: ''; |
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curl_close($request); |
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return $this->shareCount = $this->shareCount($response); |
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} |
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return $this->shareCount = null; |
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} |
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} |
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/** |
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* Default shareCount function for providers without count api. |
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* |
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* {@inheritdoc} |
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*/ |
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public function shareCount($response) |
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{ |
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return; |
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} |
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/** |
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* Default shareCountRequest function for providers without count api. |
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* |
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* {@inheritdoc} |
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*/ |
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public function shareCountRequest() |
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{ |
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return; |
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} |
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/** |
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* Generates a valid url. |
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* |
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* @param string $url |
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* @param array $pageParams parameters to be taken from page fields as $paramName => $paramNameInTheURL |
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* @param array $getParams extra parameters as $key => $value |
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* @param int $encoding Type of encoding used. It can be static::RFC3986 or static::RFC1738 |
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*/ |
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protected function buildUrl($url, array $pageParams = null, array $getParams = array(), $encoding = self::RFC1738) |
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{ |
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if ($pageParams) { |
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$getParams += $this->page->get($pageParams); |
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} |
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if (empty($getParams)) { |
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return $url; |
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} |
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if ($encoding === static::RFC1738) { |
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return $url.'?'.http_build_query($getParams); |
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} |
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$get = array(); |
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foreach ($getParams as $name => $value) { |
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$get[] = $name.'='.rawurlencode($value); |
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} |
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return $url.'?'.implode(ini_get('arg_separator.output'), $get); |
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} |
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/** |
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* Build a curl request. |
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* |
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* @param string $url |
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* @param bool|string $post |
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* @param array $headers |
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* |
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* @return resource |
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*/ |
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protected static function request($url, $post = false, array $headers = null) |
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{ |
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$connection = curl_init(); |
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curl_setopt_array($connection, array( |
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CURLOPT_URL => $url, |
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CURLOPT_RETURNTRANSFER => true, |
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CURLOPT_FOLLOWLOCATION => true, |
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CURLOPT_MAXREDIRS => 20, |
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CURLOPT_CONNECTTIMEOUT => 10, |
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CURLOPT_TIMEOUT => 10, |
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CURLOPT_SSL_VERIFYPEER => false, |
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CURLOPT_SSL_VERIFYHOST => false, |
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CURLOPT_ENCODING => '', |
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CURLOPT_AUTOREFERER => true, |
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CURLOPT_USERAGENT => 'SocialLinks PHP Library', |
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)); |
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if (!empty($post)) { |
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curl_setopt($connection, CURLOPT_POST, true); |
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if (is_string($post)) { |
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curl_setopt($connection, CURLOPT_POSTFIELDS, $post); |
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} |
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} |
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if (!empty($headers)) { |
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curl_setopt($connection, CURLOPT_HTTPHEADER, $headers); |
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} |
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return $connection; |
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} |
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/** |
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* Handle JSON responses. |
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* |
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* @param string $content |
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* |
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* @return array|false |
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*/ |
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protected static function jsonResponse($content) |
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{ |
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return json_decode($content, true); |
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} |
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/** |
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* Handle JSONP responses. |
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* |
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* @param string $content |
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* |
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* @return array|false |
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*/ |
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protected static function jsonpResponse($content) |
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{ |
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preg_match("/^\w+\((.*)\)$/", $content, $matches); |
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return json_decode($matches[1], true); |
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} |
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/** |
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* Handle HTML responses. |
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* |
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* @param string $content |
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* |
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* @return DOMDocument |
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*/ |
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protected static function htmlResponse($content) |
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{ |
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$errors = libxml_use_internal_errors(true); |
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$document = new DOMDocument(); |
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$document->loadHTML($content); |
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libxml_use_internal_errors($errors); |
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return $document; |
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} |
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} |
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This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()
can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.