PHP Cookbook读书笔记 – 第16章互联网服务
发送电子邮件 书中主要是以PEAR中的邮件发送类(Mail)来讲解的(关于如何在WIN系统下安装PEAR可以参考WIN下成功安装PEAR)。PEAR的MAIL类可以通过3种方式来发送电子邮件: 通过PHP内部的mail函数来发送 通过sendmail程序来发送 通过直接连接到一个smtp 服务
发送电子邮件
书中主要是以PEAR中的邮件发送类(Mail)来讲解的(关于如何在WIN系统下安装PEAR可以参考WIN下成功安装PEAR)。PEAR的MAIL类可以通过3种方式来发送电子邮件:
- 通过PHP内部的mail函数来发送
- 通过sendmail程序来发送
- 通过直接连接到一个smtp服务器发送邮件
书中主要以第一种方式来讲解,下面贴一个用SMTP发送邮件的例子
require_once('Mail.php');//包含mail.php函数 $params = array('host' => 'smtp.sina.com', 'port' => '25', 'username' => 'yourname@sina.com', 'password' => 'yourpassword', 'auth' => true);//必须保证这一行 $recipients = 'xxxx@sina.com'; //接收人,可以是一个数组来存放多个地址 $headers['From'] = "yourname@sina.com"; $headers['To'] = "xxxx@sina.com"; $headers['Subject'] = "主题"; $body = "内容"; //选择smtp的发送方式,当然还支持mail()和sendmail $mail_object = &Mail::factory('smtp', $params); if (PEAR::isError($e = $mail_object->send($recipients, $headers, $body))) { die($e->getMessage() . "\n"); }
通过IMAP或POP3读取邮件
这种方式主要用来读取邮件的内容,像开心网等都有个导入邮箱联系人的功能,我原来一直以为是通过这2个协议来实现的,后来查了下资料才发现,原来是通过cUrl实现的。
// open IMAP connection $mail = imap_open('{mail.server.com:143}', 'username', 'password'); // or, open POP3 connection $mail = imap_open('{mail.server.com:110/pop3}', 'username', 'password'); // grab a list of all the mail headers $headers = imap_headers($mail); // grab a header object for the last message in the mailbox $last = imap_num_msg($mail); $header = imap_header($mail, $last); // grab the body for the same message $body = imap_body($mail, $last); // close the connection imap_close($mail);
PHP访问FTP资源
通常有两种方式:
- PHP内置的FTP函数
- cURL扩展
下面是通过PHP内置函数实现的读取FTP的目录下的文件列表
set_time_limit(120); $host="127.0.0.1";//主机名 $uname="username";//用户名 $pwd ="password";//密码 $c = ftp_connect($host) or die("Can't connect"); ftp_set_option($c,FTP_TIMEOUT_SEC,120); ftp_login($c,$uname,$pwd) or die("Can't login"); ftp_pasv($c, TRUE); $ddd = ftp_nlist($c,"."); ftp_close($c) or die("Can't close"); var_dump($ddd); print("OK");
DNS相关函数
查询一个域名的ip地址:gethostbyname( )
查询一个IP上的域名(不完全可信):gethostbyaddr( )
一个域名可能绑定多个IP:gethostbynamel( )
获得mx记录:getmxrr( )
实现PING一个主机
PEAR提供的Net_Ping包可以实现这个功能
$results = $ping->ping('www.oreilly.com'); foreach($results as $result) { print "$result\n"; } $results = $ping->ping('www.oreilly.com'); foreach($results as $result) { print "$result\n"; }
返回的信息是一个整块,需要其中的个别值还需要自己解析,实现的效果可能如下面显示的这样
PING www.oreilly.com (209.204.146.22) from 192.168.123.101 : 32(60) bytes of data. 40 bytes from www.oreilly.com (209.204.146.22): icmp_seq=0 ttl=239 time=96.704 msec 40 bytes from www.oreilly.com (209.204.146.22): icmp_seq=1 ttl=239 time=86.567 msec 40 bytes from www.oreilly.com (209.204.146.22): icmp_seq=2 ttl=239 time=86.563 msec 40 bytes from www.oreilly.com (209.204.146.22): icmp_seq=3 ttl=239 time=136.565 msec 40 bytes from www.oreilly.com (209.204.146.22): icmp_seq=4 ttl=239 time=86.627 msec -- - www.oreilly.com ping statistics -- - 5 packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max/mdev = 86.563/98.605/136.565/19.381 msCopy after login
获取域名相关的信息
需要用到PEAR的另一个类Net_Whois,其中whois服务器的选择是这个功能的关键,如果不知道如何选择whois服务器,可以将$server用'whois.internic.net'替换:
require 'Net/Whois.php'; $server = 'whois.networksolutions.com'; $query = 'example.org'; $data = Net_Whois::query($server, $query);

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