使用php充当shell脚本（转载）
任务：过滤出2010-08-18的apache访问日志，并放到本地数据库。
解决方案：写两个php文件解决这个问题

假定linux系统
假定全utf-8
假定php已经放在$PATH里
假如有这么一个日志/site/data/log/access_log_20100818，内容示例如下：

[120.42.16.230] [-] [-] [2010-08-17 08:36:41] [GET] [www.site.com] [/membercenter/ordinary/score] [] [HTTP/1.1] [200] [2585] [-] [Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; QQDownload 618; GTB6.5; 360SE)]
[121.229.144.193] [-] [-] [2010-08-17 08:36:41] [GET] [www.site.com] [/bbs/jiehunzhenhao/wosikainv_49602.html] [] [HTTP/1.1] [200] [12631] [http://www.site.com/bbs/forum/jiehunzhenhao/filter/0/orderby/2/ascdesc/desc/page/4] [Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8]
[121.229.144.193] [-] [-] [2010-08-17 08:36:41] [POST] [www.site.com] [/bbsmanage/moderatorsetajax] [] [HTTP/1.1] [200] [21] [http://www.site.com/bbsmanage/moderatorset?id=4650] [Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; CIBA; 360SE)]
[60.190.125.3] [-] [-] [2010-08-17 08:36:41] [GET] [www.site.com] [/bbs/fangchanzatan/jiangjiatong_49458.html] [] [HTTP/1.1] [200] [10435] [http://www.site.com/membercenter/ordinary/bbssend?page=6] [Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; SE 2.X)]
[118.120.207.138] [-] [-] [2010-08-17 08:36:41] [GET] [www.site.com] [/bbs/jingcaitietu/tianshangrenjian_51533.html] [] [HTTP/1.1] [200] [13418] [http://www.site.com/bbs/forum/jingcaitietu/] [Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; QQDownload 627; GTB6.5; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; .NET CLR 2.0.50727)]
[121.229.144.193] [-] [-] [2010-08-18 08:36:41] [GET] [www.site.com] [/bbsmanage/setmoderator] [] [HTTP/1.1] [200] [451] [http://www.site.com/mange/magframe] [Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; CIBA; 360SE)]
[121.229.144.193] [-] [-] [2010-08-18 08:36:42] [POST] [www.site.com] [/bbsmanage/moderatorxml] [] [HTTP/1.1] [200] [3699] [http://www.site.com/bbsmanage/setmoderator] [Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; CIBA; 360SE)]
[60.211.96.212] [-] [-] [2010-08-18 08:36:42] [GET] [www.site.com] [/member/index/id/7651] [] [HTTP/1.1] [200] [5308] [http://www.site.com/membercenter/ordinary/friend] [Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; SE 2.X; .NET CLR 2.0.50727; .NET CLR 4.0.20506)]
[113.205.59.70] [-] [-] [2010-08-18 08:36:43] [POST] [www.site.com] [/register/checkcaptcha] [] [HTTP/1.1] [200] [21] [http://www.site.com/register/ordinary/member_id/8326] [Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648)]
[123.4.197.242] [-] [-] [2010-08-18 08:36:43] [GET] [www.site.com] [/bbsoperate/tuijian] [?act=tuijian&id=33936] [HTTP/1.1] [200] [4448] [-] [Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; CNCDialer)]
。。。。。
。。。。。

当然很大，几百M。


shell_filter.php文件内容如下：

#!/usr/local/php/bin/php
<?php
include 'CommandPublic.php'; //这是公共文件

$handle = fopen("php://stdin", "r");

//这里获得命令行参数
if (count($argv) > 1 )
   $date = $argv[1];
else
   $date = '2010-01-01';   

//迭代
$j =0;
while (!feof($handle)) {
    $buffer = fgets($handle);
    process($buffer);
}
//关闭输入流，并结束
fclose($handle);

//筛选处理
function process($str){
    global $j;
    global $date;  
    $str = strval($str);
   $str = trim($str);
   $str = preg_replace('#\n|\r\n#',"", $str);
   //首先要确保符合日志格式
   if (preg_match('#\[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\] \[.*?\]#', $str)) {
      if (!preg_match('#::1#', $str)) { //这是无用的记录
          if (preg_match('#'. $date .'#', $str)) { //关键点，匹配
              $j++;
              echo $str . "\n";                    //这里通过管道输出到下一个文件
          }
      }
       
   }
}
?>

文件save_echo.php内容如下：

#!/usr/local/php/bin/php
<?php
include