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HomeBackend DevelopmentPHP Tutorialphp排序1亿个QQ号码解决方案

php排序1亿个QQ号码
吃饱喝足了,还发贴了。
拆开分成几千份进行排序再合并。


首先先创建一个1亿个QQ号的txt。

PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php // 创建一亿个QQ号的txt (大约需85~100秒)set_time_limit(0);$fn = 'qq.txt';$fp = fopen($fn, 'w');$st = microtime(true);$l = range(0,10000);shuffle($l);foreach ($l as $k=>$v){    $arr = range($v*10000+10000,10000*($v+1)+9999);    shuffle($arr);    fputs($fp,implode("\n", $arr)."\n");    unset($arr);}echo  microtime(true)-$st;?>


 

稍等一两分钟1亿个随机QQ创建完成了。

QQ号码范围为>10000。文件大小大概有840MB。



下面就进行分类划分成几千份文件。

以QQ号码长度为文件夹,QQ号码前3位为文件名。

PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php // 长度号码分类 (大约需360~400秒)set_time_limit(0);$st = microtime(true);if(!is_dir('qq_no')) mkdir('qq_no');$file = fopen('qq.txt', 'r'); $i=0;$end_s = '';while(!feof($file)){    $g = 1042*1024;    fseek($file,$g*$i);    $s = fread($file, $g);         $end = strrpos($s, "\n");    $arr_s = $end_s.substr($s, 0, $end);    $end_s = substr($s, $end);    $arr = explode("\n", $arr_s);    foreach ($arr as $k=>$v)    {        if($v!='')        {            $tag = "$v[0]$v[1]$v[2]";            $text_arr[strlen($v)][$tag][] = $v;        }    }    foreach ($text_arr as $k=>$v)    {        $n_dir = 'qq_no/'.$k;        if (!is_dir($n_dir)) mkdir($n_dir);        foreach ($v as $tag=>$val)        {            $n_tf = fopen($n_dir.'/'.$tag.'.txt', 'a+');            fputs($n_tf,implode("\n",$val)."\n");        }                    }    unset($text_arr);    ++$i;}echo  microtime(true)-$st;?>




最后就要每个文件进行排序合并数据了。

PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php // 排序完成拉 (800~920秒)set_time_limit(0);$st = microtime(true);$qq_done = fopen('qq_done.txt', 'a+');$root = 'qq_no';$dir_array = scandir($root);foreach ($dir_array as $key=>$val){    if ($val != '.' && $val != '..')        $dirs[$val] =  scandir($root.'/'.$val);}foreach ($dirs as $key=>$val){    foreach ($val as $v)    {        if ($v != '.' && $v != '..')        {            $file = $root. '/' . $key . '/'. $v;            $c = file_get_contents($file);            $arr = explode("\n", $c);            sort($arr);            fputs($qq_done, implode("\n",$arr));            unlink($file);        }    }    rmdir($root. '/' . $key);}rmdir($root);echo  microtime(true)-$st;?>



总共大概花费了20多分钟。

虽然完成了,但方法很土鳖 0_0 ,坛里各位高手们改进改进啊。


------解决方案--------------------
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