What to do if php Chinese is sent to the background with garbled characters

Solution to the garbled Chinese characters transmitted to the background in php: 1. Use "iconv('UTF-8', 'GB2312//IGNORE', $targetFile);"; 2. Use "move_uploaded_file($tempFile, $targetFile);".

The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.

What should I do if Chinese php is sent to the background with garbled characters?

Solution to the Chinese garbled problem of php file upload background storage:

php file upload background processing explanation:

After the user uploads the file ( I use uploadify2.3 for the front end. I hope to save it according to its original file name (sometimes in Chinese). Only using PHP's move_uploaded_file command will cause garbled characters (I am a Ubuntu server). You need to use icotargetFile=iconv(′UTF−8′,′GB2312//IGNORE′,targetFile) first; without IGNORE, iconv will fail to convert the character - (horizontal bar) and automatically truncate it afterwards. For example:

iconv('UTF-8', 'GB2312//IGNORE', "博客—yet"); // 输出"博客yet"
iconv('UTF-8', 'GB2312//IGNORE', "博客—yet"); // 输出"博客"

So the correct storage method is:

$targetFile = iconv('UTF-8', 'GB2312//IGNORE', $targetFile); // UTF8转GB2312
move_uploaded_file($tempFile, $targetFile);  // 服务器把文件暂时放在$tempFile

Because transcoding will lose characters, we need to save the new file name. In order to determine which characters are lost, I used this back and forth Conversion trick:

$targetFile = iconv('GB2312', 'UTF-8//IGNORE', $targetFile );

php file download background processing explanation:

When to use GB2312 and when to use UTF8 is important.

In addition, ob_clean() and flush() are the key to whether the downloaded file is garbled

<?php
$ROOT = $_SERVER["DOCUMENT_ROOT"]; // 获取根路径
$filename = $_GET["filename"]; // GET方式拿到文件名
$filepath = $ROOT.$filename; // 文件路径UFT8版
$filepath_iconv = iconv(&#39;UTF-8&#39;, &#39;GB2312//IGNORE&#39;, $ROOT.$filename); // 文件路径GB2312版
if (is_file($filepath_iconv))  
// 和上面一样，php的文件系统函数的输入一定要GB2312字符，否则is_file返回false
{ 
    $fileinfo = pathinfo($filepath); // 返回给客户端的用UFT8
    header(&#39;Content-type: application/x-&#39;.$fileinfo[&#39;extension&#39;]);
    header(&#39;Content-Disposition: attachment; filename=&#39;.$fileinfo[&#39;basename&#39;]);
    header(&#39;Content-Length: &#39;.filesize($filepath_iconv)); // GB2312才能访问文件
    ob_clean();  // 如果不加这两句的话，下载下来的文件是乱码的
    flush();  // 如果不加这两句的话，下载下来的文件是乱码的
    readfile($filepath_iconv); // GB2312才能访问文件
    exit();
}
else { die("文件不存在或已被删除"); }
?>

The following is the file upload backend file I use with uploadify 2.3, for reference only:

<?php
error_reporting(0); // 如果需要开启php警告，删除此句
if (!empty($_FILES)) {
    $my_articleDBtable = $_GET["my_articleDBtable"];
    require_once("../../init.php"); // $tmpimgUploadDir在这个文件里
    $tempFile = $_FILES[&#39;Filedata&#39;][&#39;tmp_name&#39;];
    $originalName = $_FILES[&#39;Filedata&#39;][&#39;name&#39;];
    if (empty($tempFile)) { die("抱歉，由于服务器原因，文件上传失败"); }
    $dateYmd = date("Ymd",strtotime("now"));
    $targetPath = $ROOT.$attachmentDir.$dateYmd.&#39;/&#39;; //存储文件夹（绝对路径）
    mkdir($targetPath, 0777, true);
    $new_dir_name = new_name($_FILES[&#39;Filedata&#39;][&#39;name&#39;]); //将文件名md5加密，仅保留最后一个后缀 
    mkdir($targetPath.$new_dir_name, 0777, true);
    $targetFile = $targetPath.$new_dir_name.&#39;/&#39;.$originalName;
    //移动tmp文件到指定位置，并防止中文文件名乱码。（tmp文件是服务器自动生成的）
    move_uploaded_file($tempFile, iconv(&#39;UTF-8&#39;, &#39;GB2312//IGNORE&#39;, $targetFile));
    $originalName = iconv(&#39;UTF-8&#39;, &#39;GB2312//IGNORE&#39;, $originalName);
    $originalName = iconv(&#39;GB2312&#39;, &#39;UTF-8//IGNORE&#39;, $originalName);
    //返回文件地址
    $filename = $originalName;
    $href = $ROOTTOSERVER.$attachmentDir.$dateYmd.&#39;/&#39;.$new_dir_name.&#39;/&#39;.$originalName;
    $filename = mysql_real_escape_string($filename);
    $href = mysql_real_escape_string($href);
    mysql_query("insert into `$my_articleDBtable` (articleName, articleContent) VALUES (&#39;$filename&#39;,&#39;$href&#39;)") or die(mysql_error());
    die("success");
}
function new_name($filename){
    $ret = array();
    $ext = pathinfo($filename);
    $ext = $ext[&#39;extension&#39;];
    $ext = strtolower($ext);
    if ($ext==&#39;doc&#39;|| $ext==&#39;docx&#39;) 
    {
        $name = basename($filename,$ext); 
        $name = md5($name.time()); //.&#39;.&#39;.$ext;
        return $name;
    }
    die("文件名不合法");
}
?>

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