php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

<?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;

?>

PHP code

<?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;

?>

PHP code

<?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;

?>

C/C++ code

#include 

#define BITSPERWORD 32
#define SHIFT 5
#define MASK 0x1F
#define N 100000000

int a[1 + N/BITSPERWORD];

void set(int i)
{
    a[i>>SHIFT] |= (1>SHIFT] &= ~(1>SHIFT] & (1------解决方案--------------------

既然有现成的数据文件，就没有必要去构造插入串了
PHP code
set_time_limit(0);
$sql =