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November 29, 2016 03:10
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simple http request example in php
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| <?php | |
| /* | |
| * simple HttpRequest example using PHP | |
| * tom slankard | |
| */ | |
| class HttpRequest { | |
| public $url = null; | |
| public $method = 'GET'; | |
| public $body = null; | |
| public $headers = Array(); | |
| public $allow_redirect = true; | |
| private $url_info = null; | |
| private $host_name = null; | |
| private $host_ip = null; | |
| private $response_body = null; | |
| private $response_headers = Array(); | |
| private $response_code = null; | |
| private $response_message = null; | |
| private $port = null; | |
| private $verbose = true; | |
| public function __construct($url, $method = 'GET') { | |
| $this->url = $url; | |
| $this->method = $method; | |
| // parse url | |
| $this->url_info = parse_url($url); | |
| $this->host_name = $this->url_info['host']; | |
| $this->host_ip = gethostbyname($this->host_name); | |
| // get port number given the scheme | |
| if(!isset($this->url_info['port'])) { | |
| if($this->url_info['scheme'] == "http") | |
| $this->port = 80; | |
| else if($this->url_info['scheme'] == "https") | |
| $this->port = 443; | |
| } else { | |
| $this->port = $this->url_info['port']; | |
| } | |
| // add default headers | |
| $this->headers["Host"] = "$this->host_name"; | |
| $this->headers["Connection"] = "close"; | |
| } | |
| private function constructRequest() { | |
| $path = "/"; | |
| if(isset($this->url_info['path'])) | |
| $path = $this->url_info['path']; | |
| $req = "$this->method $path HTTP/1.1\r\n"; | |
| foreach($this->headers as $header => $value) { | |
| $req .= "$header: $value\r\n"; | |
| } | |
| return "$req\r\n"; | |
| } | |
| /// reads a line from a file | |
| function readLine($fp) | |
| { | |
| $line = ""; | |
| while (!feof($fp)) { | |
| $line .= fgets($fp, 2048); | |
| if (substr($line, -1) == "\n") { | |
| return rtrim($line, "\r\n"); | |
| } | |
| } | |
| return $line; | |
| } | |
| public function send() { | |
| $fp = fsockopen($this->host_ip, $this->port); | |
| // construct request | |
| $request = $this->constructRequest(); | |
| // write request to socket | |
| fwrite($fp, $request); | |
| // read the status line | |
| $line = $this->readline($fp); | |
| $status = explode(" ", $line); | |
| // make sure the HTTP version is valid | |
| if(!isset($status[0]) || !preg_match("/^HTTP\/\d+\.?\d*/", $status[0])) | |
| die("Couldn't get HTTP version from response."); | |
| // get the response code | |
| if(!isset($status[1])) | |
| die("Couldn't get HTTP response code from response."); | |
| else $this->response_code = $status[1]; | |
| // get the reason, e.g. "not found" | |
| if(!isset($status[2])) | |
| die("Couldn't get HTTP response reason from response."); | |
| else $this->response_reason = $status[2]; | |
| // read the headers | |
| do { | |
| $line = $this->readLine($fp); | |
| if($line != "") { | |
| $header = split(":", $line); | |
| $this->response_headers[$header[0]] = ltrim($header[1]); | |
| } | |
| } while(!feof($fp) && $line != ""); | |
| // read the body | |
| $this->response_body = ""; | |
| do { | |
| $line = $this->readLine($fp); { | |
| if($line) | |
| $this->response_body .= "$line\n"; | |
| } | |
| } while(!feof($fp)); | |
| // close the connection | |
| fclose($fp); | |
| return TRUE; | |
| } | |
| public function getStatus() { | |
| return $this->response_code; | |
| } | |
| public function getHeaders() { | |
| return $this->response_headers; | |
| } | |
| public function getResponseBody() { | |
| return $this->response_body; | |
| } | |
| } | |
| $req = new HttpRequest("http://www.iana.org/domains/example/", "GET"); | |
| $req->headers["Connection"] = "close"; | |
| $req->send() or die("Couldn't send!"); | |
| echo( $req->getResponseBody() ); | |
| ?> |
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