Http Learning Notes (i)

Introduced

The HTTP protocol is an abbreviation for the Hyper Text Transfer Protocol (Hypertext Transfer Protocol), which is used to transfer hypertext to the local browser from the World Wide Web (www:world Wide Web) server. HTTP is a TCP/IP communication protocol that transmits data (HTML files, image files, query results, and so on).

I. How to set up and get status code for server and client

How the PHP server sets the return status code

/** * http Protocol defined Status Codes * HTTP protocol state code, call the function just to give the $num to a known value in the following table will return to the state. * @param int $num*/     Public functionHttps$num) {        $http=Array (            "http/1.1 Continue", 101 = "http/1.1 101 Switching Protocols", "http/1.1" $ OK ", 201 =" http/1.1 201 Created ", 202 =" http/1.1 202 Accepted ", 203 = "http/1.1 203 non-authoritative Information", 204 = "http/1.1 204 No Content", 205 = "HTTP/1 .1 205 Reset Content ", 206 =" http/1.1 206 Partial Content "," http/1.1 multiple Ch Oices ", 301 =" http/1.1 301 Moved Permanently ", 302 =" http/1.1 302 Found ", 303 = > "http/1.1 303 See other", 304 = "http/1.1 304 not Modified", 305 = "http/1.1 305 use Pr            Oxy ", 307 =" http/1.1 307 temporary Redirect ", [http/1.1] 401 = "http/1.1 401 Unauthorized", 402 = "http/1.1 402 Payment Required", 403 = "HTTP/1.       1 403 Forbidden ",     404 = "http/1.1 404 Not Found", 405 = "http/1.1 405 Method not allowed", 406 = "HTT p/1.1 406 Not acceptable ", 407 =" http/1.1 407 Proxy Authentication Required ", 408 =" HTTP/1            .1 408 Request time-out ", 409 =" http/1.1 409 Conflict ", 410 =" http/1.1 410 Gone ",  411 = "http/1.1 411 Length Required", 412 = "http/1.1 412 precondition Failed", 413 = "http/1.1 413 Request Entity Too Large", 414 = "http/1.1 414 request-uri Too Large", 415 =  "http/1.1 415 Unsupported Media Type", 416 = "http/1.1 416 requested range not satisfiable", 417 = "http/1.1 417 expectation Failed", "http/1.1 + Internal Server Error", 501 = "http/1.1 501 Not implemented", 502 = "http/1.1 502 Bad Gateway", 503 = "http/1.1 503 Servic         E unavailable ",   504 = "http/1.1 504 Gateway Time-out"         ); return $http[$num]; }

Use this method

Header ($this->https (300));

View the returned status code in Google Chrome

Http Learning Notes (i)