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<?php |
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/** |
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* This file is part of the alphaz Framework. |
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* |
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* @author Muhammad Umer Farooq (Malik) <[email protected]> |
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* |
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* @link https://github.com/alphazframework/framework |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* @since 1.0.0 |
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* |
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* @license MIT |
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*/ |
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namespace alphaz\http; |
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class Response extends Message |
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{ |
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/** |
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* __construct. |
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* |
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* Instantiate the response object |
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* |
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* @param (array) $config |
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* |
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* @since 1.0.0 |
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*/ |
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public function __construct(array $config = []) |
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{ |
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parent::__construct(); |
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// Check for config values and set defaults |
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if (!isset($config['version'])) { |
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$config['version'] = '1.1'; |
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} |
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if (!isset($config['code'])) { |
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$config['code'] = 200; |
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} |
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$this->setVersion($config['version']) |
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->withStatus($config['code']); |
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if (!isset($config['reasonPhrase'])) { |
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$config['reasonPhrase'] = self::$responseCodes[$config['code']]; |
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} |
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if (!isset($config['headers']) || (isset($config['headers']) && !is_array($config['headers']))) { |
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$config['headers'] = ['Content-Type' => 'text/html']; |
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} |
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if (!isset($config['body'])) { |
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$config['body'] = null; |
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} |
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$this->setReasonPhrase($config['reasonPhrase']) |
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->setHeaders($config['headers']) |
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->setBody($config['body']); |
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} |
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/** |
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* Get response message from code. |
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* |
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* @param (int) $code |
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* |
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* @since 1.0.0 |
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* |
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* @return string |
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*/ |
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public static function getMessageFromCode($code) |
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{ |
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if (!array_key_exists($code, self::$responseCodes)) { |
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throw new \Exception('The header code '.$code.' is not valid.'); |
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} |
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return self::$responseCodes[$code]; |
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} |
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/** |
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* Encode the body data. |
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* |
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* @param (mixed) $body |
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* @param (string) $encode |
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* |
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* @since 1.0.0 |
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* |
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* @return string |
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*/ |
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public static function encodeBody($body, $encode = 'gzip') |
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{ |
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switch ($encode) { |
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// GZIP compression |
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case 'gzip': |
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if (!function_exists('gzencode')) { |
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throw new \Exception('Gzip compression is not available.'); |
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} |
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$encodedBody = gzencode($body); |
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break; |
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// Deflate compression |
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case 'deflate': |
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if (!function_exists('gzdeflate')) { |
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throw new \Exception('Deflate compression is not available.'); |
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} |
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$encodedBody = gzdeflate($body); |
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break; |
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// Unknown compression |
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default: |
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$encodedBody = $body; |
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} |
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return $encodedBody; |
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} |
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/** |
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* Decode the body data. |
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* |
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* @param (mixed) $body |
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* @param (string) $encode |
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* |
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* @since 1.0.0 |
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* |
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* @return string |
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*/ |
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public static function decodeBody($body, $decode = 'gzip') |
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{ |
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switch ($decode) { |
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// GZIP compression |
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case 'gzip': |
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if (!function_exists('gzinflate')) { |
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throw new \Exception('Gzip compression is not available.'); |
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} |
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$decodedBody = gzinflate(substr($body, 10)); |
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break; |
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// Deflate compression |
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case 'deflate': |
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if (!function_exists('gzinflate')) { |
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throw new \Exception('Deflate compression is not available.'); |
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} |
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$zlibHeader = unpack('n', substr($body, 0, 2)); |
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$decodedBody = ($zlibHeader[1] % 31 == 0) ? gzuncompress($body) : gzinflate($body); |
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break; |
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// Unknown compression |
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default: |
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$decodedBody = $body; |
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} |
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return $decodedBody; |
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} |
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/** |
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* Is this response empty?. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isEmpty() |
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{ |
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return in_array($this->getStatusCode(), [204, 205, 304]); |
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} |
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/** |
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* Is this response ok?. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isOk() |
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{ |
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return $this->getStatusCode() === 200; |
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} |
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/** |
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* Is this response successful?. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isSuccessful() |
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{ |
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return $this->getStatusCode() >= 200 && $this->getStatusCode() < 300; |
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} |
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/** |
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* Is this response redirect. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isRedirect() |
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{ |
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return in_array($this->getStatusCode(), [301, 302, 303, 307, 308]); |
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} |
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/** |
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* Is this response Forbidden?. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isForbidden() |
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{ |
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return $this->getStatusCode() === 403; |
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} |
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/** |
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* Is this response not found?. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isNotFound() |
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{ |
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return $this->getStatusCode() === 404; |
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} |
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/** |
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* Is this response Client error?. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isClientError() |
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{ |
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return $this->getStatusCode() >= 400 && $this->getStatusCode() < 500; |
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} |
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/** |
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* Is this response Server error?. |
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* |
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* @since 1.0.0 |
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* |
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* @return bool |
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*/ |
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public function isServertusCode() |
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{ |
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return $this->getStatusCode() >= 500 && $this->getStatusCode() < 600; |
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} |
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/** |
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* Get the response headers as a string. |
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* |
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* @param (bool) $status |
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* (string) $eol |
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* |
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* @since 1.0.0 |
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* |
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* @return string |
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*/ |
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public function getHeadersAsString($status = true, $eol = "\n") |
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{ |
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$headers = ''; |
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if ($status) { |
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$headers = "HTTP/{$this->version} {$this->code} {$this->reasonPhrase}{$eol}"; |
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} |
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foreach ($this->headers as $name => $value) { |
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$headers .= "{$name}: {$value}{$eol}"; |
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} |
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return $headers; |
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} |
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/** |
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* Set the reasonPhrase. |
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* |
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* @param (float) $version |
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* |
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* @since 1.0.0 |
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* |
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* @return object |
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*/ |
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public function setReasonPhrase($reasonPhrase = '') |
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{ |
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$this->reasonPhrase = $reasonPhrase; |
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return $this; |
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} |
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/** |
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* Set the protocol version. |
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* |
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* @param (float) $version |
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* |
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* @since 1.0.0 |
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* |
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* @return object |
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*/ |
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public function setVersion($version = 1.1) |
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{ |
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$this->withProtocolVersion($version); |
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return $this; |
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} |
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/** |
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* Get the status code. |
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* |
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* @since 1.0.0 |
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* |
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* @return int |
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*/ |
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public function getStatusCode() |
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{ |
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return $this->code; |
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} |
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/** |
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* Set the status code. |
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* |
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* @param (int) $code |
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* |
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* @since 1.0.0 |
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* |
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* @return object |
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*/ |
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public function withStatus($code = 200) |
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{ |
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if (!array_key_exists($code, self::$responseCodes)) { |
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throw new \Exception('That header code '.$code.' is not allowed.'); |
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} |
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$this->code = $code; |
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$this->reasonPhrase = self::$responseCodes[$code]; |
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return $this; |
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} |
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/** |
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* Set the response body. |
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* |
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* @param (mixed) $body |
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* |
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* @since 1.0.0 |
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* |
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* @return object |
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*/ |
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public function setBody($body = null) |
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{ |
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$this->withBody($body); |
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return $this; |
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} |
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/** |
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* Set SSL headers to fix file cache issues over SSL in certain browsers. |
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* |
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* @since 1.0.0 |
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* |
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* @return object |
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*/ |
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public function setSslHeaders() |
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{ |
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$this->setHeader('Expires', 0); |
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$this->setHeader('Cache-Control', 'private, must-revalidate'); |
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$this->setHeader('Pragma', 'cache'); |
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return $this; |
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} |
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/** |
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* Send response and exit. |
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* |
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* @param (int) $code |
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* (array) $headers |
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* |
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* @since 1.0.0 |
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* |
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* @return void |
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*/ |
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public function sendAndExit($code = null, array $headers = null) |
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{ |
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$this->send($code, $headers); |
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exit; |
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|
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} |
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|
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/** |
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* Return entire response as a string. |
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* |
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* @return string |
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*/ |
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public function __toString() |
392
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{ |
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$body = $this->body; |
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|
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if (array_key_exists('Content-Encoding', $this->headers)) { |
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$body = self::encodeBody($body, $this->headers['Content-Encoding']); |
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$this->headers['Content-Length'] = strlen($body); |
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} |
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|
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return $this->getHeadersAsString()."\n".$body; |
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} |
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} |
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In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.