http 505 error message

PHP uses file_get_contents or curl to request that the content of the https domain name is null or that the Http 505 error occurs, Some days ago, I suddenly received feedback from users, saying that the original QQ logon and Weibo logon in the

HTTP packets are divided into request messages and response messages ). I,Packet Components An HTTP packet consists of three parts: (1) start line) (2) Header) (3) Body) Example: HTTP/1.0 200 OK // start line Content-Type: text/plain // header

HTTP 400-invalid request HTTP 401.1-unauthorized: Logon Failed HTTP 401.2-unauthorized: logon fails due to server configuration problems HTTP 401.3-ACL prohibit Resource Access HTTP 401.4-unauthorized: Authorization denied by filter HTTP 40

HTTP error Code table all HTTP status codes and their definitions.Code indication2XX success200 normal; The request is complete.201 Normal; Immediately after the POST command.202 normal; Accepted for processing, but processing is not yet complete.203

HTTP Error Code Description:"100": continue"101": witching protocols"200": OK"201": created& Quot; 202 & quot;: accepted"203": Non-authoritative information"204": NO content"205": reset content"206": Partial content& Quot; 300 & quot;: Multiple

"100": continue"101": witching protocols"200": OK"201": created& Quot; 202 & quot;: accepted"203": Non-authoritative information"204": NO content"205": reset content"206": Partial content& Quot; 300 & quot;: Multiple Choices"301": moved permanently"3

HTTP 400-Invalid request HTTP 401.1-Unauthorized: Logon failed HTTP 401.2-Unauthorized: Server configuration issues cause logon failure HTTP 401.3-acl prohibit access to resources HTTP 401.4-Unauthorized: Authorization denied by filter HTTP

HTTP Error code meaning: 100: Continue101: witchingProtocols200: OK201: Created202: Accepted203: Non-AuthoritativeInformation204: NoContent205: ResetContent206: PartialContent300: MultipleChoices301: MovedPermanently HTTP Error Code Description: 100:

HTTP Error Code Description:"100": continue"101": witchingProtocols"200": OK"201": created& Quot; 202 & quot;: accepted"203 ":Non-authoritative information"204": NO content"205": reset content"206": Partial content& Quot; 300 & quot;: Multiple

HTTP Error Code Description:"100": continue"101": witching protocols"200": OK"201": created& Quot; 202 & quot;: accepted"203": Non-authoritative information"204": NO content"205": reset content"206": Partial content& Quot; 300 & quot;: Multiple