Preminder Beta后台程序源码，用PHP-CLI写的（什么是PHP-CLI?）加了些注释，大家可以看一下。最有意思就是HashURL时的$SEED，其实获取PR是不符合Google的服务条款的，很汗的吧……
写好脚本之后，在/etc/crontab里加入一条每小时执行的计划，就可以啦，在这里可以看到PR检测日志！
27 * * * * root /usr/bin/php -f /home/kangzj/kang.php
数据库的结构为：
—
— 表的结构 logs
—
CREATE TABLE logs (
ID int(11) NOT NULL auto_increment,
info varchar(150) NOT NULL,
utime bigint(11) NOT NULL,
PRIMARY KEY (ID)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 ;
—
— 表的结构 users
—
CREATE TABLE users (
ID int(11) NOT NULL auto_increment,
email varchar(50) NOT NULL,
domain varchar(100) NOT NULL,
pr tinyint(2) NOT NULL,
lastcheck timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
PRIMARY KEY (ID)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
< ?
//随机取5个PR低的域名进行检测，如果有PR变化则继续检测所有域名，否则退出程序
//测试集的大小
$testSetSize = 5;
//connect to mysql
$conn = mysql_connect('localhost','preminder','111') or die('error');
mysql_select_db('preminder');
$result = mysql_query("select email, domain, pr from users where pr<=3 order by RAND() limit $testSetSize");
//计数
$i=0;
while($row = mysql_fetch_array($result))
{
$nowpr = intval(pagerank($row['domain']));
// $nowpr.' '.$row['pr'];
if($nowpr != $row['pr']){
break;
}
$i++;
sleep(1);
}
if($i == $testSetSize){
//写日志
mysql_query("INSERT OR REPLACE into logs (utime, info) values ('".time()."','No pr updates detected!')");
//没有更新退出程序
exit;//no updates
}
//and there's pr update
$up=0;
$down=0;
$same=0;
$logs="domaintfromtton";
$result = mysql_query('select email, domain, pr from users');
while($row = mysql_fetch_array($result))
{
$nowpr = intval(pagerank($row['domain']));
$email = $row['email'];
$domain = $row['domain'];
$pr = $row['pr'];
if($nowpr != $pr)
mysql_query("update users set pr='$nowpr' where email='$email' and domain='$domain'");
$subject = '您的'.$domain.'的PR由'.$pr.'更新为'.$nowpr;
$message = '亲爱的'.$email.',
您的域名'.$domain.'的pr由'.$pr.'更新为'.$nowpr;
$headers = $headers = "MIME-Version: 1.0rnContent-type: text/html; rn charset="utf-8"rn".'From: noreply@kangzj.net' . "rn" .
'Reply-To: kangzj@kangzj.net' . "rn" .
'X-Mailer: PHP/' . phpversion();
if($nowpr>$pr)
{
$up++;
$message.=',恭喜！';
}elseif($nowpr< $pr)
{
$down++;
$message.=',降低了...';
}else
{
$same++;
$message.=',没有变化哦。';
}
$message.='
';
mail($email, $subject, $message, $headers);
$logs .= "$domaint$prt$nowprtn";
sleep(1);
}
$fname = './'.date("Y-m-d-H-i-s", time()).'.log';
//写文件更新日志，含所有域名PR变化情况
file_put_contents($fname, $logs);
//更新日志
mysql_query("INSERT OR REPLACE into logs (info, utime) values ('$up domains PR rose, $down domains PR dropped, $same domains PR remained the same.','" .time()."')");
//检测PR函数
/*
*encode the url
*/
function HashURL($url)
{$SEED = "Mining PageRank is AGAINST GOOGLE'S TERMS OF SERVICE. Yes, I'm talking to you, scammer.";
$Result = 0x01020345;
for ($i=0; $i> 23) & 0x1FF) | $Result < < 9;
}
return sprintf("8%x", $Result);
}
/*
*get pagerank
*/
function pagerank($domain)
{
$StartURL = "http://www.google.com/search?client=navclient-auto&googleip=0;973&ie=UTF-8&oe=UTF-8&features=Rank&q=info:";
$GoogleURL = $StartURL.$domain. '&ch='.HashURL($domain);
$fcontents = file_get_contents("$GoogleURL");
$pagerank = substr($fcontents,9);
return intval($pagerank);
}
?>