PHPcsv
sql............
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for student
-- ----------------------------
DROP TABLE IF EXISTS `student`;
CREATE TABLE `student` (
`ID` int(11) NOT NULL AUTO_INCREMENT,
`StuNo` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
`StuName` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
`StuAge` int(11) NULL DEFAULT NULL,
PRIMARY KEY (`ID`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 12 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;
-- ----------------------------
-- Records of student
-- ----------------------------
INSERT INTO `student` VALUES (1,'A001','小明',22);
INSERT INTO `student` VALUES (2,'A005','小李',23);
INSERT INTO `student` VALUES (3,'A007','小红',24);
INSERT INTO `student` VALUES (4,'A003',22);
INSERT INTO `student` VALUES (5,'A002',23);
INSERT INTO `student` VALUES (6,'A004',24);
INSERT INTO `student` VALUES (7,'A006','小王',25);
INSERT INTO `student` VALUES (8,'A008','乔峰',27);
INSERT INTO `student` VALUES (9,'A009','欧阳克',22);
INSERT INTO `student` VALUES (10,'A010','老顽童',34);
INSERT INTO `student` VALUES (11,'A011','黄老邪',33);
SET FOREIGN_KEY_CHECKS = 1;<?PHP
set_time_limit(0);
ini_set('memory_limit','128M');
$fileName = date('YmdHis',time());
header('Content-Encoding: UTF-8');
header("Content-type:application/vnd.ms-excel;charset=UTF-8");
header('Content-Disposition: attachment;filename="' . $fileName . '.csv"');
//注意，数据量在大的情况下。比如导出几十万到几百万，会出现504 Gateway Time-out,请修改PHP.ini的max_execution_time参数
$fp = fopen('PHP://output','a');
//连接数据库
$dbhost = '127.0.0.1';
$dbuser = 'root';
$dbpwd = 'root';
$con = MysqLi_connect($dbhost,$dbuser,$dbpwd);
if (MysqLi_connect_errno())
die('connect error');
$database = 'test';//选择数据库
MysqLi_select_db($con,$database);
MysqLi_query($con,"set names UTF8");//如果需要请设置编码
//用fputcsv从数据库中导出1百万的数据,比如我们每次取1万条数据，分100步来执行
//一次性读取1万条数据，也可以把$nums调小，$step相应增大。
$step = 100;
$nums = 10000;
$where = "where 1=1"; //筛选条件,可自行添加
//设置标题
$title = array('id','编号','姓名','年龄'); //注意这里是小写id,否则ID命名打开会提示Excel 已经检测到"xxx.xsl"是SYLK文件,但是不能将其加载: CSV 文或者XLS文件的前两个字符是大写字母"I"，"D"时，会发生此问题。
foreach ($title as $key => $item)
$title[$key] = iconv("UTF-8","GB2312//IGNORE",$item);
fputcsv($fp,$title);
for ($s = 1; $s <= $step; $s++) {
$start = ($s - 1) * $nums;
$result = MysqLi_query($con,"SELECT ID,StuNo,StuName,StuAge FROM `student` " . $where . " ORDER BY `ID` LIMIT {$start},{$nums}");
if ($result) {
while ($row = MysqLi_fetch_assoc($result)) {
foreach ($row as $key => $item)
$row[$key] = iconv("UTF-8","GBK",$item); //这里必须转码，不然会乱码
fputcsv($fp,$row);
}
MysqLi_free_result($result); //释放结果集资源
ob_flush(); //每1万条数据就刷新缓冲区
flush();
}
}
MysqLi_close($con);//断开连接
