Solution to Japanese garbled characters when reading directory in PHP

When developing PHP, sometimes you need to read a folder on the server. However, when the folder contains files named in Japanese, garbled characters may occur. This is because PHP uses the ASCII encoding format by default and cannot accurately recognize Japanese encoding.

The following are several methods to solve the problem of Japanese garbled characters in PHP reading directories.

1. Modify PHP configuration

You can solve the garbled problem by modifying the PHP configuration file php.ini. Find the following two items in the php.ini configuration file:

default_charset = "UTF-8"
mbstring.language = Japanese

Change their values ​​to the following:

default_charset = "UTF-8"
mbstring.language = Neutral

The advantage of this is that the program will use UTF-8 encoding format to read Get the files in the folder and solve the garbled problem.

2. Modify the program encoding format

You can modify the program’s encoding format so that it can recognize Japanese encoding. In PHP, you can use the iconv function to modify the file encoding format.

The sample code is as follows:

// 设置文件夹路径和编码格式
$folder_path = "folder_path"; // 文件夹路径
$charset = "Shift_JIS"; // 文件编码格式

// 打开文件夹
$dir = opendir($folder_path);

// 读取文件夹内的文件
while ($file = readdir($dir)) {
    // 排除文件夹内的 . 和 .. 文件
    if ($file !== '.' && $file !== '..') {
        // 修改文件编码格式为 UTF-8
        $file = iconv($charset, 'UTF-8', $file);

        // 输出文件名
        echo $file . '<br>';
    }
}

// 关闭文件夹
closedir($dir);

The advantage of this is that there is no need to change the PHP configuration file, just modify the program encoding format directly.

3. Use the mb_convert_encoding function

The mb_convert_encoding function can convert Japanese encoding to UTF-8 encoding format. The sample code is as follows:

// 设置文件夹路径和编码格式
$folder_path = "folder_path"; // 文件夹路径
$charset = "Shift_JIS"; // 文件编码格式

// 打开文件夹
$dir = opendir($folder_path);

// 读取文件夹内的文件
while ($file = readdir($dir)) {
    // 排除文件夹内的 . 和 .. 文件
    if ($file !== '.' && $file !== '..') {
        // 修改文件编码格式为 UTF-8
        $file = mb_convert_encoding($file, 'UTF-8', $charset);

        // 输出文件名
        echo $file . '<br>';
    }
}

// 关闭文件夹
closedir($dir);

Using the mb_convert_encoding function can solve the Japanese encoding problem, but you need to pay attention to the consistency of the encoding format.

To sum up, the above three methods can solve the problem of Japanese garbled characters in PHP reading directory. Which method to choose should be determined according to the actual situation.

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