CREATE TABLE `tb_users` (`id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT '用户ID',`name` varchar(32) DEFAULT '' COMMENT '用户名',`age` tinyint(3) DEFAULT '0' COMMENT '用户年龄',`desc` varchar(255) DEFAULT '' COMMENT '用户描述',`phone` varchar(11) DEFAULT '' COMMENT '用户手机',`qq` varchar(16) DEFAULT '' COMMENT '用户QQ',`email` varchar(64) DEFAULT '' COMMENT '用户邮箱',`addr` varchar(255) DEFAULT '' COMMENT '用户地址',PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

<?php
set_time_limit(0);
ini_set('memory_limit', '128M');//使用TP3.2的String类，php7下会报错，注意把类名换一下
require './String.class.php';
use Org\Util\NewString;$begin = microtime(true);$db = new mysqli('127.0.0.1', 'root', '', 'test');if($db->connect_error) {die('connect error');
}
//数据插入语句
$insSql = '';//一百万数据，分200步，每步插入5000条
$step = 200;
$nums = 5000;for($s = 0; $s < $step; ++$s) {$insSql = 'INSERT INTO tb_users VALUES';for($n = 0; $n < $nums; ++$n) {$name = NewString::randString(3, 4);$age = mt_rand(1, 120);$desc = NewString::randString(64, 4);$phone = NewString::randString(11, 1);$qq = NewString::randString(13, 1);$email = $qq . '@qq.com';$addr = NewString::randString(128, 4);$insSql .= "(NULL, '{$name}', $age, '{$desc}', '{$phone}', '{$qq}', '{$email}', '{$addr}'),";}$insSql = rtrim($insSql, ',');$db->query($insSql);
}
$end = microtime(true);
echo '用时:', $end - $begin;$db->close();

<?php
set_time_limit(0);
ini_set('memory_limit', '128M');$fileName = date('YmdHis', time());
header('Content-Type: application/vnd.ms-execl');
header('Content-Disposition: attachment;filename="' . $fileName . '.csv"');$begin = microtime(true);//打开php标准输出流
//以写入追加的方式打开
$fp = fopen('php://output', 'a');$db = new mysqli('127.0.0.1', 'root', '', 'test');if($db->connect_error) {die('connect error');
}//我们试着用fputcsv从数据库中导出1百万的数据
//我们每次取1万条数据，分100步来执行
//如果线上环境无法支持一次性读取1万条数据，可把$nums调小，$step相应增大。
$step = 100;
$nums = 10000;//设置标题
$title = array('ID', '用户名', '用户年龄', '用户描述', '用户手机', '用户QQ', '用户邮箱', '用户地址');
foreach($title as $key => $item) {$title[$key] = iconv('UTF-8', 'GBK', $item);
}
//将标题写到标准输出中
fputcsv($fp, $title);for($s = 1; $s <= $step; ++$s) {$start = ($s - 1) * $nums;$result = $db->query("SELECT * FROM tb_users ORDER BY id LIMIT {$start},{$nums}");if($result) {while($row = $result->fetch_assoc()) {foreach($row as $key => $item) {//这里必须转码，不然会乱码$row[$key] = iconv('UTF-8', 'GBK', $item);}fputcsv($fp, $row);}$result->free();//每1万条数据就刷新缓冲区ob_flush();flush();}
}$end = microtime(true);
echo '用时：', $end - $begin;

<a href="/downSearchData.php?参数1=值1&参数2=值2&page=1">下载汇总结果1</a>
<a href="/downSearchData.php?参数1=值1&参数2=值2&page=2">下载汇总结果2</a>
<a href="/downSearchData.php?参数1=值1&参数2=值2&page=3">下载汇总结果3</a>

<form id="searchFrm">姓名<input type="text" name="uname"><input type="button" id="searchDataBtn" value="导出汇总结果">
</form>
<div id="searchDataList"></div><script type="script">$("#searchDataBtn").on("click", function() {var params = $("#searchFrm").serialize();//获取查询数据的条数$.get("/getSearchDataRows?" + params, function(data) {var downDataList = "";if(data["rows"]) {//rows是数据总条数，pageSize是一页多少条var pageNum = Math.ceil(data["rows"] / data["pageSize"]);for(var i = 1; i <= pageNum; ++i) {downDataList += "<a href='/downSearchData.php?'" + params + "&page=" + i + ">下载汇总结果" + i + "</a>&nbsp;&nbsp;";}$("#searchDataList").html(downDataList);} else {$("#searchDataList").text("没有数据");}}, "json");return false;});
</script>