PHP supports HTTP request classes of GET, POST, Multipart/form-data, and multipartform-data.

PHP supports HTTP request classes of GET, POST, Multipart/form-data, and multipartform-data.

The example in this article describes the HTTP request class for PHP to support GET, POST, Multipart/form-data and its applications. The details are as follows:

The HttpRequest. class. php class file is as follows:

<? Php/** HttpRequest class, HTTP request class, support for GET, POST, Multipart/form-data * Date: * Author: fdipzone * Ver: 1.0 ** Func: * public setConfig set connection parameter * public setFormdata set form data * public setFiledata set file data * public send data * private connect create connection * private disconnect * private sendGet method, processes sent data, does not process file data * private sendPost post, processes sent data * private sendMultipart multipart, processes sent data, and sends files This method is recommended */class HttpRequest {// class start private $ _ ip = ''; private $ _ host =''; private $ _ url = ''; private $ _ port = ''; private $ _ errno =''; private $ _ errstr = ''; private $ _ timeout = 15; private $ _ fp = null; private $ _ formdata = array (); private $ _ filedata = array (); // set the connection parameter public function setConfig ($ config) {$ this-> _ ip = isset ($ config ['IP'])? $ Config ['IP']: ''; $ this-> _ host = isset ($ config ['host'])? $ Config ['host']: ''; $ this-> _ url = isset ($ config ['url'])? $ Config ['url']: ''; $ this-> _ port = isset ($ config ['Port'])? $ Config ['Port']: ''; $ this-> _ errno = isset ($ config ['errno'])? $ Config ['errno']: ''; $ this-> _ errstr = isset ($ config ['errstr'])? $ Config ['errstr']: ''; $ this-> _ timeout = isset ($ confg ['timeout'])? $ Confg ['timeout']: 15; // if no ip address is set, use host instead of if ($ this-> _ ip = '') {$ this-> _ ip = $ this-> _ host ;}// set the form data public function setFormData ($ formdata = array ()) {$ this-> _ formdata = $ formdata;} // sets the public function setFileData ($ filedata = array () {$ this-> _ filedata = $ filedata ;} // send data public function send ($ type = 'get') {$ type = strtolower ($ type); // check the sending type if (! In_array ($ type, array ('get', 'post', 'multipart') {return false;} // check the connection if ($ this-> connect ()) {switch ($ type) {case 'get': $ out = $ this-> sendGet (); break; case 'post ': $ out = $ this-> sendPost (); break; case 'multipart': $ out = $ this-> sendMultipart (); break;} // empty data if (! $ Out) {return false;} // send data fputs ($ this-> _ fp, $ out); // read the returned data $ response = ''; while ($ row = fread ($ this-> _ fp, 4096) {$ response. = $ row;} // disconnect $ this-> disconnect (); $ pos = strpos ($ response, "\ r \ n "); $ response = substr ($ response, $ pos + 4); return $ response;} else {return false ;}// create a connection to private function connect () {$ this-> _ fp = fsockopen ($ this-> _ ip, $ this-> _ port, $ this-> _ errno, $ this-> _ er Rstr, $ this-> _ timeout); if (! $ This-> _ fp) {return false;} return true;} // disconnect the private function disconnect () {if ($ this-> _ fp! = Null) {fclose ($ this-> _ fp); $ this-> _ fp = null ;}// get method to process sent data, file data will not be processed private function sendGet () {// check whether empty data if (! $ This-> _ formdata) {return false;} // process url $ url = $ this-> _ url .'? '. Http_build_query ($ this-> _ formdata); $ out = "GET ". $ url. "http/1.1 \ r \ n"; $ out. = "host :". $ this-> _ host. "\ r \ n"; $ out. = "connection: close \ r \ n"; return $ out;} // post method, processing sent data private function sendPost () {// check whether empty data if (! $ This-> _ formdata &&! $ This-> _ filedata) {return false;} // form data $ data = $ this-> _ formdata? $ This-> _ formdata: array (); // file data if ($ this-> _ filedata) {foreach ($ this-> _ filedata as $ filedata) {if (file_exists ($ filedata ['path']) {$ data [$ filedata ['name'] = file_get_contents ($ filedata ['path']) ;}} if (! $ Data) {return false;} $ data = http_build_query ($ data); $ out = "POST ". $ this-> _ url. "http/1.1 \ r \ n"; $ out. = "host :". $ this-> _ host. "\ r \ n"; $ out. = "content-type: application/x-www-form-urlencoded \ r \ n"; $ out. = "content-length :". strlen ($ data ). "\ r \ n"; $ out. = "connection: close \ r \ n"; $ out. = $ data; return $ out;} // multipart method to process sent data. This method is recommended for sending files. private function sendMultipart () {// check whether NULL data is returned if (! $ This-> _ formdata &&! $ This-> _ filedata) {return false;} // sets the split ID srand (double) microtime () * 1000000); $ boundary = '---------------------------'. substr (md5 (rand (),); $ data = '--'. $ boundary. "\ r \ n"; // form data $ formdata = ''; foreach ($ this-> _ formdata as $ key => $ val) {$ formdata. = "content-disposition: form-data; name = \"". $ key. "\" \ r \ n "; $ formdata. = "content-type: text/plain \ r \ n"; if (is_array ($ val) {$ form Data. = json_encode ($ val ). "\ r \ n"; // The array is easy to process after json encode is used} else {$ formdata. = rawurlencode ($ val ). "\ r \ n" ;}$ formdata. = '--'. $ boundary. "\ r \ n";} // file data $ filedata = ''; foreach ($ this-> _ filedata as $ val) {if (file_exists ($ val ['path']) {$ filedata. = "content-disposition: form-data; name = \"". $ val ['name']. "\"; filename = \"". $ val ['filename']. "\" \ r \ n "; $ filedata. = "content-type :". mime_content_type ($ Val ['path']). "\ r \ n"; $ filedata. = implode ('', file ($ val ['path']). "\ r \ n"; $ filedata. = '--'. $ boundary. "\ r \ n" ;}} if (! $ Formdata &&! $ Filedata) {return false;} $ data. = $ formdata. $ filedata. "-- \ r \ n"; $ out = "POST ". $ this-> _ url. "http/1.1 \ r \ n"; $ out. = "host :". $ this-> _ host. "\ r \ n"; $ out. = "content-type: multipart/form-data; boundary = ". $ boundary. "\ r \ n"; $ out. = "content-length :". strlen ($ data ). "\ r \ n"; $ out. = "connection: close \ r \ n"; $ out. = $ data; return $ out; }}// class end?>

The demo sample program is as follows:

<? Php require ('httprequest. class. php '); $ config = array ('IP' => 'demo .fdipzone.com', // if it is null, use host instead of 'host' => 'demo .fdipzone.com ', 'Port' => 80, 'errno' => '', 'errstr' =>'', 'timeout' => 30, 'url' => '/getapi. php ', // 'url' =>'/postapi. php ', // 'url' =>'/multipart. php '); $ formdata = array ('name' => 'fdipzone', 'gender' => 'man '); $ filedata = array ('name' => 'photo', 'filename' => 'photo. Jpg ', 'path' => 'photo.jpg'); $ obj = new HttpRequest (); $ obj-> setConfig ($ config ); $ obj-> setFormData ($ formdata); $ obj-> setFileData ($ filedata); $ result = $ obj-> send ('get '); // $ result = $ obj-> send ('post'); // $ result = $ obj-> send ('multipart'); echo '<pre> '; print_r ($ result); echo '</pre>';?>

You can click here to download the complete instance code.

I hope this article will help you with PHP programming.

[URGENT] I'm not sure whether the attribute of enctype = "multipart/form-data" is a version issue or not.

A file upload control that can only be obtained in the background using $ _ FILES. Other control types are obtained using $ _ POST, you only need to use the value obtained by $ _ FILES for your processing.

Js simulate POST submission of an enctype = "multipart/form-data" type form

It is used only when a file is uploaded.
XmlHttp. setRequestHeader ("Content-Type", "application/x-www-form-urlencoded ;");
Change
XmlHttp. setRequestHeader ("Content-Type", "multipart/form-data ;");

As for sending binary data, you can solve it by yourself.
----------------------------- 7db8c30150364 is actually regular
It is an end segment of the Start segment. 7db8c30150364 only uses a string of non-repeated characters to identify the data in the middle, Content-Disposition: form-data; name = "polls []" indicates the data and file name.

In fact, it is necessary to use this method when uploading files in a socket package. If you have time to study how to handle POST files in HTTP.