How does dedecms perform encoding conversion?

dedecms method for encoding conversion: 1. Create a sample file; 2. Define a variable "$utf8_str" with a value of "UTF-8 encoded string"; 3. Use "iconv("UTF- 8", "GBK//IGNORE", $utf8_str)" syntax for encoding conversion; 4. Use "mb_convert_encoding($utf8_str, "GBK", "UTF-8")" syntax for encoding conversion, and echo outputs the result.

The operating system of this tutorial: Windows 10 system, DedeCMS version 5.7.109, Dell G3 computer.

dedecms encoding conversion method can be achieved through PHP's built-in function `iconv()` or `mb_convert_encoding()`.

The usage of these two functions is as follows:

// 使用iconv()函数进行编码转换
$utf8_str = "UTF-8编码字符串";
$gbk_str = iconv("UTF-8", "GBK//IGNORE", $utf8_str);
echo $gbk_str;
// 使用mb_convert_encoding()函数进行编码转换
$utf8_str = "UTF-8编码字符串";
$gbk_str = mb_convert_encoding($utf8_str, "GBK", "UTF-8");
echo $gbk_str;

In the above code example, UTF-8 encoded string is converted into GBK encoded string, where `//IGNORE` The parameter indicates that illegal characters are ignored.

If you want to perform full-site encoding conversion in dedecms, it is recommended to add the following code to the global template file:

// 开启输出缓存
ob_start();
// 转换输出内容的编码
header("Content-type: text/html; charset=GBK");
$content = ob_get_contents();
ob_clean();
echo iconv("UTF-8", "GBK//IGNORE", $content);

In this way, all page output of the website can be converted to GBK encoding. Note that this code should be added in global template files such as `header.php`.

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