What should I do if php exports mysql to excel with garbled characters?

The solution for php to export mysql to excel with garbled characters: first set the time zone and header information; then clear the buffer through "ob_end_clean();"; then set the table information; finally query the content and export the database data.

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PHP query database export excel and solve the garbled problem, Native code does not require plug-ins

I recently wrote an information system and needed to export the contents of the database to excel

I will post my code below, no phpexcel plug-in is required

System requirements: php5.6

<?php
date_default_timezone_set(&#39;PRC&#39;);//设置时区
 
/*设置head头信息*/
ob_end_clean();//清除缓冲区,避免乱码
Header("Content-Type:application/vnd.ms-excel;charset=UTF-8");
Header("Accept-Ranges:bytes");
Header("Content-Disposition:attachment;filename="."导出excel的名字".date(&#39;YmdHis&#39;).".xls");
Header("Pragma:no-cache");
Header("Expires:0");
 
$str = $str2 = null;
/*设置表格信息*/
$str.= "序号"."\t";
$str.= "学号"."\t";
$str.= "姓名"."\t";
$str.= "性别"."\t";
$str.= "学院"."\t";
$str.= "年级"."\t";
$str.= "班级"."\t";
$str.= "手机号"."\t";
$str.= "报名时间"."\t\r\n";
$info = iconv("UTF-8","GBK",$str);
echo $info;
 
/*查询内容导出数据库数据*/
$con = new mysqli("localhost", "root", "password", "detabase");
if (!$con) {
    die(mysqli_error()) ;
}
//$sql = " select * from bmxx";
//$res = mysqli_query($con, $sql);
 
mysqli_query($con,"SET NAMES utf8");//解决数据库中有汉字时显示在前台出现乱码问题
$result = mysqli_query($con,"SELECT * FROM `bmxx`");
 
while($row = mysqli_fetch_assoc($result)){
    $list[] = $row;
}
mysqli_free_result($result);
mysqli_close($con);
$co = 1;
foreach($list as $v){
    $str2.= trim($co++)."\t";
    $str2.= trim(iconv("UTF-8","GBK","\t".$v[&#39;num&#39;]."\t"))."\t";
    $str2.= trim(iconv("UTF-8","GBK",$v[&#39;name&#39;]))."\t";
    $str2.= trim(iconv("UTF-8","GBK",$v[&#39;sex&#39;]))."\t";
    $str2.= trim(iconv("UTF-8","GBK",$v[&#39;xueyuan&#39;]))."\t";
    $str2.= trim(iconv("UTF-8","GBK",$v[&#39;grade&#39;]))."\t";
    $str2.= trim(iconv("UTF-8","GBK",$v[&#39;class&#39;]))."\t";
    $str2.= trim(iconv("UTF-8","GBK",$v[&#39;phone&#39;]))."\t";
    $str2.= trim(iconv("UTF-8","GBK",$v[&#39;time&#39;]))."\t\r\n";
}
echo $str2;
?>

This line of code was not added at the beginning, resulting in garbled output. Just clear the buffer before each data generation,

ob_end_clean();//清除缓冲区,避免乱码

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