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<?php |
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namespace Anax\Response; |
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/** |
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* Handling a response. |
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*/ |
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class Response |
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{ |
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/** |
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* @var array $headers set all headers to send. |
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* @var array $statusCode set statuscode to use. |
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* @var string $body body to send with response. |
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* @var string $filename a filename to send for download. |
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*/ |
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private $headers = []; |
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private $statusCode = null; |
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private $body = null; |
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private $filename = null; |
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/** |
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* Set status code to be sent as part of headers. |
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* |
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* @param int $value of response status code |
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* |
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* @return self |
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*/ |
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public function setStatusCode(int $value = null) |
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{ |
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if (is_null($value)) { |
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return $this; |
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} |
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$this->statusCode = $value; |
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return $this; |
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} |
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/** |
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* Get status code to be sent as part of headers. |
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* |
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* @return integer value as status code or null if not set. |
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*/ |
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public function getStatusCode() |
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{ |
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return $this->statusCode; |
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} |
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/** |
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* Set headers. |
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* |
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* @param string $header type of header to set |
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* |
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* @return self |
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*/ |
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public function addHeader($header) |
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{ |
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$this->headers[] = $header; |
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return $this; |
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} |
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/** |
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* Get all headers. |
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* |
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* @return array with headers |
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*/ |
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public function getHeaders() : array |
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{ |
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return $this->headers; |
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} |
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/** |
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* Send headers. |
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* |
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* @return self |
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*/ |
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public function sendHeaders() |
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{ |
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if (php_sapi_name() !== "cli" && headers_sent($file, $line)) { |
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throw new Exception("Try to send headers but headers already sent, output started at $file line $line."); |
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} |
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http_response_code($this->statusCode); |
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foreach ($this->headers as $header) { |
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if (php_sapi_name() !== "cli") { |
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header($header); |
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} |
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} |
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return $this; |
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} |
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/** |
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* Set the body. |
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* |
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* @param callable|string $body either a string or a callable that |
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* can generate the body. |
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* |
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* @return self |
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*/ |
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public function setBody($body) |
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{ |
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if (is_string($body)) { |
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$this->body = $body; |
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} elseif (is_array($body)) { |
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$this->setJsonBody($body); |
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} elseif (is_callable($body)) { |
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ob_start(); |
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$res1 = call_user_func($body); |
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$res2 = ob_get_contents(); |
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$this->body = $res2 . $res1; |
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ob_end_clean(); |
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} |
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return $this; |
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} |
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/** |
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* Get the body. |
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* |
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* @return string |
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*/ |
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public function getBody() |
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{ |
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return $this->body; |
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} |
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/** |
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* Send a file to be downloaded by the user. |
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* |
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* @param string $filename to the file to download. |
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* |
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* @return self |
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*/ |
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public function addFile(string $filename) : object |
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{ |
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$this->filename = $filename; |
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// Get file type and set it as Content Type |
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$finfo = finfo_open(FILEINFO_MIME_TYPE); |
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header("Content-Type: " . finfo_file($finfo, $filename)); |
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finfo_close($finfo); |
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// Use Content-Disposition: attachment to specify the filename |
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$this->addHeader("Content-Disposition: attachment; filename=" |
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. basename($filename)); |
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// No cache |
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$this->addHeader("Expires: 0"); |
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$this->addHeader("Cache-Control: must-revalidate"); |
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$this->addHeader("Pragma: public"); |
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// Define file size |
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$this->addHeader("Content-Length: " |
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. filesize($filename)); |
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return $this; |
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} |
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/** |
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* Send a file to be downloaded by the user. |
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* |
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* @param string $filename to the file to download. |
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* |
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* @return self |
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*/ |
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public function sendFile() : object |
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{ |
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ob_clean(); |
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flush(); |
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if ($this->filename && is_readable($this->filename)) { |
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readfile($this->filename); |
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} |
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return $this; |
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} |
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/** |
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* Send response supporting several ways of receiving response $data. |
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* |
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* @param mixed $data to use as optional base for creating response. |
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* |
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* @return self |
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*/ |
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public function send($data = null) |
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{ |
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$statusCode = null; |
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if ($data instanceof self) { |
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return $data->send(); |
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} |
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if (is_string($data)) { |
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$this->setBody($data); |
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} |
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if (is_array($data) && isset($data[0])) { |
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$this->setBody($data[0]); |
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} |
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if (is_array($data) && isset($data[1]) && is_numeric($data[1])) { |
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$statusCode = $data[1]; |
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} |
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$this->setStatusCode($statusCode); |
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if (!headers_sent()) { |
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$this->sendHeaders(); |
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} |
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if ($this->body) { |
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echo $this->getBody(); |
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} |
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if ($this->filename) { |
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$this->sendFile(); |
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} |
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return $this; |
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} |
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/** |
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* Send JSON response with an optional statuscode. |
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* |
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* @param mixed $data to be encoded as json. |
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* @param integer $statusCode optional statuscode to send. |
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* |
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* @return self |
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*/ |
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public function sendJson($data, $statusCode = null) |
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{ |
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return $this->setStatusCode($statusCode) |
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->setJsonBody($data) |
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->send(); |
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} |
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/** |
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* Set body with JSON data. |
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* |
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* @param mixed $data to be encoded as json. |
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* |
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* @return self |
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*/ |
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public function setJsonBody($data) |
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{ |
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$this->addHeader("Content-Type: application/json; charset=utf8"); |
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$this->setBody(json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES)); |
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return $this; |
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} |
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/** |
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* Redirect to another page. |
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* |
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* @param string $url to redirect to |
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* |
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* @return self |
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*/ |
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public function redirect(string $url) : object |
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{ |
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$this->addHeader("Location: " . $url); |
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$this->body = null; |
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return $this; |
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} |
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} |
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This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.