php使用socket调用http和smtp协议实例小结
本文实例讲述了php使用socket调用http和smtp协议。分享给大家供大家参考，具体如下：
socket发送HTTP请求
http协议请求报文格式
get
##请求方法请求文件路径?查询字符串HTTP/协议版本号 ##Host:主机名:端口号 ##Connection:close
post
##请求方法请求文件路径HTTP/协议版本号 ##Host:主机名:端口号 ##Content-type:application/x-www-form-urlencoded ##Content-length：查询字符串长度 ##Connection:close ##查询字符串
api.php
"; print_r($_REQUEST);
fsocketopen发送get请求
"zhezhao","age"=>23];
$url.="?".http_build_query($param);
$socket=fsockopen($host,$port,$errno,$errstr,10);
$request="GET/${url}HTTP/1.1\r\n";
$request.="Host:${host}:{$port}\r\n";
$request.="Connection:close\r\n\r\n";
fwrite($socket,$request);
echo"Request:
".str_replace("\r\n","
",$request);
echo"
Response:
";
$response="";
while($out=fread($socket,2048)){
$response.=$out;
}
echostr_replace("\r\n","
",$response);
fclose($socket);
sockets扩展发送post请求
"zhezhao","age"=>23];
$data=http_build_query($param);
$socket=socket_create(AF_INET,SOCK_STREAM,SOL_TCP);
socket_connect($socket,$host,$port);
$request="POST/${url}HTTP/1.1\r\n";
$request.="Host:${host}:{$port}\r\n";
$request.="Content-type:application/x-www-form-urlencoded\r\n";
$request.="Content-length:".strlen($data)."\r\n";
$request.="Connection:close\r\n\r\n";
$request.="${data}";
socket_write($socket,$request);
echo"Request:
".str_replace("\r\n","
",$request);
echo"
Response:
";
$response="";
while($out=socket_read($socket,2048)){
$response.=$out;
}
echostr_replace("\r\n","
",$response);
socket_close($socket);
socket发送smtp请求
首先通过socket连接到smtp服务器，例如smtp.163.com25，然后实现smtp发送邮件的必须参数即可。
HELO主机名
AUTHLOGINbase64编码之后的发件人邮箱
base64编码之后的密码
##填写信封
MAILFROM:<发件人邮箱>
RCPTTO:<收件人邮箱>
##填写信件内容
DATA
MIME-Version:1.0
To:收件人邮箱
From:发件人邮箱
Subject：邮件主题邮件内容
fsocketopen发送邮件
fsocketopen和pfsocketopen是php机制本身的函数，可以直接调用，不需要安装扩展。以上两个函数可以打开一个网络连接或者一个Unix套接字连接，然后我们可以使用fwrite,fread,fclose,feof等函数直接操作该网络连接。
"; fputs($sock,"AUTHLOGIN".base64_encode($user)."\r\n"); echofgets($sock,512)."
"; fputs($sock,base64_encode($password)."\r\n"); echofgets($sock,512)."
"; fputs($sock,"MAILFROM:<${user}>\r\n"); echofgets($sock,512)."
"; fputs($sock,"RCPTTO:<${mailto}>\r\n"); echofgets($sock,512)."
"; fputs($sock,"DATA\r\n"); echofgets($sock,512)."
"; $header="MIME-Version:1.0\r\n"; $header.="To:${mailto}\r\n"; $header.="From:${user}\r\n"; $header.="Subject:${subject}\r\n"; fputs($sock,$header."\r\n".$body); echofgets($sock,512)."
"; fputs($sock,"\r\n.\r\n"); echofgets($sock,512)."
"; fputs($sock,"QUIT\r\n"); fclose($sock);
sockets扩展发送邮件
sockets扩展的功能更加强大，可以搭建tcp/ip服务器，不过我们使用smtp协议发送邮件的例子，只需要使用到socket客户端的功能。
"; socket_write($socket,"AUTHLOGIN".base64_encode($user)."\r\n"); echosocket_read($socket,512)."
"; socket_write($socket,base64_encode($password)."\r\n"); echosocket_read($socket,512)."
"; socket_write($socket,"MAILFROM:<${user}>\r\n"); echosocket_read($socket,512)."
"; socket_write($socket,"RCPTTO:<${mailto}>\r\n"); echosocket_read($socket,512)."
"; socket_write($socket,"DATA\r\n"); echosocket_read($socket,512)."
"; $header="MIME-Version:1.0\r\n"; $header.="To:${mailto}\r\n"; $header.="From:${user}\r\n"; $header.="Subject:${subject}\r\n"; socket_write($socket,$header."\r\n".$body); echosocket_read($socket,512)."
"; socket_write($socket,"\r\n.\r\n"); echosocket_read($socket,512)."
"; socket_write($socket,"QUIT\r\n"); fclose($sock);
参考文章：
https://www.nhooo.com/article/66594.htm
https://www.nhooo.com/article/114394.htm
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