curl爬取过程中，会返回一个http_code，下面是他们的意义信息$http_code["0"]="Unable to access";$http_code["100"]="Continue";$http_code["101"]="Switching Protocols";$http_code["200"]=”OK”;$http_code["201"]=”Created”;$http_code["202"]=”Accepted”;$http_code["203"]=”Non-Authoritative Information”;$http_code["204"]=”No Content”;$http_code["205"]=”Reset Content”;$http_code["206"]=”Partial Content”;$http_code["300"]=”Multiple Choices”;$http_code["301"]=”Moved Permanently”;$http_code["302"]=”Found”;$http_code["303"]=”See Other”;$http_code["304"]=”Not Modified”;$http_code["305"]=”Use Proxy”;$http_code["306"]=”(Unused)”;$http_code["307"]=”Temporary Redirect”;$http_code["400"]=”Bad Request”;$http_code["401"]=”Unauthorized”;$http_code["402"]=”Payment Required”;$http_code["403"]=”Forbidden”;$http_code["404"]=”Not Found”;$http_code["405"]=”Method Not Allowed”;$http_code["406"]=”Not Acceptable”;$http_code["407"]=”Proxy Authentication Required”;$http_code["408"]=”Request Timeout”;$http_code["409"]=”Conflict”;$http_code["410"]=”Gone”;$http_code["411"]=”Length Required”;$http_code["412"]=”Precondition Failed”;$http_code["413"]=”Request Entity Too Large”;$http_code["414"]=”Request-URI Too Long”;$http_code["415"]=”Unsupported Media Type”;$http_code["416"]=”Requested Range Not Satisfiable”;$http_code["417"]=”Expectation Failed”;$http_code["500"]=”Internal Server Error”;$http_code["501"]=”Not Implemented”;$http_code["502"]=”Bad Gateway”;$http_code["503"]=”Service Unavailable”;$http_code["504"]=”Gateway Timeout”;$http_code["505"]=”HTTP Version Not Supported”;