本文實例講述了php使用socket調用http和smtp協議。分享給大家供大家參考，具體如下：
socket發送HTTP請求
http協議請求報文格式
get
## 請求方法 請求文件路徑?查詢字符串 HTTP/協議版本號## Host: 主機名:端口號## Connection:close
post
## 請求方法 請求文件路徑 HTTP/協議版本號## Host: 主機名:端口號## Content-type: application/x-www-form-urlencoded## Content-length： 查詢字符串長度## Connection: close## 查詢字符串
api.php
<?phpecho $_SERVER["REQUEST_METHOD"]."<br/>";print_r($_REQUEST);
fsocketopen發送get請求
<?php$url = "api.php";$host = "127.0.0.1";$port = 8080;$param = ["name"=>"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,$request);echo "<b>Request:</b><br/>".str_replace("/r/n","<br/>",$request);echo "<hr/><b>Response:</b><br/>";$response = "";while ($out = fread($socket, 2048)) { $response .= $out;}echo str_replace("/r/n","<br/>",$response);fclose($socket);sockets擴展發送post請求
<?php$url = "api.php";$host = "127.0.0.1";$port = 8080;$param = ["name"=>"zhezhao","age"=>23];$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,$request);echo "<b>Request:</b><br/>".str_replace("/r/n","<br/>",$request);echo "<hr/><b>Response:</b><br/>";$response = "";while ($out = socket_read($socket, 2048)) { $response .= $out;}echo str_replace("/r/n","<br/>",$response);socket_close($socket);socket發送smtp請求
首先通過socket連接到smtp服務器，例如smtp.163.com 25，然后實現smtp發送郵件的必須參數即可。
HELO 主機名
AUTH LOGIN base64編碼之后的發件人郵箱
base64編碼之后的密碼
##填寫信封
MAIL FROM:<發件人郵箱>
RCPT TO:<收件人郵箱>
##填寫信件內容
DATA
MIME-Version:1.0
To: 收件人郵箱
From: 發件人郵箱
Subject： 郵件主題郵件內容
fsocketopen發送郵件
fsocketopen和pfsocketopen是php機制本身的函數，可以直接調用，不需要安裝擴展。以上兩個函數可以打開一個網絡連接或者一個Unix套接字連接，然后我們可以使用fwrite,fread,fclose,feof等函數直接操作該網絡連接。
<?php$user = "root@163.com";$password = "root";$mailto = "1234567@qq.com";$subject = "fsocketopen發送郵件";$body = "收到郵件了么，親";$sock = fsockopen("smtp.163.com",25);fputs($sock,"HELO localhost/r/n");echo fgets($sock, 512)."<br/>";fputs($sock,"AUTH LOGIN ".base64_encode($user)."/r/n");echo fgets($sock, 512)."<br/>";fputs($sock,base64_encode($password)."/r/n");echo fgets($sock, 512)."<br/>";fputs($sock,"MAIL FROM:<${user}>/r/n");echo fgets($sock, 512)."<br/>";fputs($sock,"RCPT TO:<${mailto}>/r/n");echo fgets($sock, 512)."<br/>";fputs($sock,"DATA/r/n");echo fgets($sock, 512)."<br/>";$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" . $body);echo fgets($sock, 512)."<br/>";fputs($sock, "/r/n./r/n");echo fgets($sock, 512)."<br/>";fputs($sock,"QUIT/r/n");fclose($sock);sockets擴展發送郵件
sockets擴展的功能更加強大，可以搭建tcp/ip服務器，不過我們使用smtp協議發送郵件的例子，只需要使用到socket客戶端的功能。
<?php$user = "root@163.com";$password = "root";$mailto = "1234567@qq.com";$subject = "sockets擴展發送郵件";$body = "收到郵件了么，親";$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);socket_connect($socket, "smtp.163.com",25);socket_write($socket,"HELO localhost/r/n");echo socket_read($socket, 512)."<br/>";socket_write($socket,"AUTH LOGIN ".base64_encode($user)."/r/n");echo socket_read($socket, 512)."<br/>";socket_write($socket,base64_encode($password)."/r/n");echo socket_read($socket, 512)."<br/>";socket_write($socket,"MAIL FROM:<${user}>/r/n");echo socket_read($socket, 512)."<br/>";socket_write($socket,"RCPT TO:<${mailto}>/r/n");echo socket_read($socket, 512)."<br/>";socket_write($socket,"DATA/r/n");echo socket_read($socket, 512)."<br/>";$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" . $body);echo socket_read($socket, 512)."<br/>";socket_write($socket, "/r/n./r/n");echo socket_read($socket, 512)."<br/>";socket_write($socket,"QUIT/r/n");fclose($sock);希望本文所述對大家PHP程序設計有所幫助。
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