<?php /* * Copyright © 2021 ExacTI Technology Solutions. All rights reserved. * GPLv3 General License. * https://exacti.com.br * Phacil PHP Framework - https://github.com/exacti/phacil-framework */ namespace Phacil\Framework; /** * HTTP response class. * * @since 0.0.1 * * @package Phacil\Framework * @api */ final class Response { /** * * @var array */ private $headers = array(); /** * * @var int */ private $level = 0; private $output; /** * Add a HTTP header, it's must be a one string or two string args. * * @param string $header The all entire header or just a key * @param string|null $content [optional] An content value header * @return void */ public function addHeader($header, $content = null) { if($content){ $this->headers[$header] = $content; } else { $head = explode(':', $header, 2); $this->headers[$head['0']] = isset($head[1]) ? $head[1]: false; } } /** * Send redirect HTTP header to specified URL * * @param string $url * @param int $status * @return never */ public function redirect($url, $status = 302) { header('Status: ' . $status); header('Location: ' . $url); exit; } /** * @param int $level * @return void */ public function setCompression($level) { $this->level = $level; } /** * @param mixed $output * @param bool $isJSON * @param int $HTTPCODE * @param string|null $HTTPDESC * @return void */ public function setOutput($output, $isJSON = false, $HTTPCODE = 0, $HTTPDESC = null) { if($isJSON) $this->isJSON(); if($HTTPCODE !== 0) $this->code($HTTPCODE, $HTTPDESC); $this->output = $output; } /** * @param mixed $data * @param int $level * @return string|false */ private function compress($data, $level = 0) { if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false)) { $encoding = 'gzip'; } if (isset($_SERVER['HTTP_ACCEPT_ENCODING']) && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'x-gzip') !== false)) { $encoding = 'x-gzip'; } if (!isset($encoding)) { return $data; } if (!extension_loaded('zlib') || ini_get('zlib.output_compression')) { return $data; } if (headers_sent()) { return $data; } if (connection_status()) { return $data; } $this->addHeader('Content-Encoding: ' . $encoding); return gzencode($data, (int)$level); } /** @return void */ public function output() { if ($this->output) { if ($this->level) { $ouput = $this->compress($this->output, $this->level); } else { $ouput = $this->output; } if (!headers_sent()) { foreach ($this->headers as $key => $header) { try { if(!$header) header($key, true); else header($key.": ".$header, true); } catch (Exception $th) { //throw $th; throw new Exception("Error Processing Header ".$key, 1); } } } else { throw new Exception("Error Processing Headers: Header or Content has been sent", 1); } echo $ouput; } } /** @return void */ public function isJSON() { $this->addHeader('Content-Type', 'application/json'); } /** * @param int $code * @param string|null $description * @return void */ public function code($code, $description = null){ $this->addHeader("HTTP/1.1 ".$code.(($description) ? " ". $description : "")); $this->addHeader("Status: ".$code.""); } }