Example of how to convert the encoding of all files in a folder with PHP

/**
* Convert the encoding of all files in the folder
* @param string $filename
* @edit bbs.it-home.org
*/
function iconv_file($filename,$input_encoding='gbk',$output_encoding='utf-8')
{
if(file_exists($filename))
{
if(is_dir($filename))
{
foreach (glob("$filename/*") as $key=>$value)
{
iconv_file($value);
}
}
else
{
$contents_before = file_get_contents($filename);
/*$encoding = mb_detect_encoding($contents_before,array('CP936','ASCII','GBK','GB2312','UTF-8'));
echo $encoding;
if($encoding=='UTF-8') mb_detect_encoding函数不工作
{
return;
}*/
$contents_after = iconv($input_encoding,$output_encoding,$contents_before);
file_put_contents($filename, $contents_after);
}
}
else
{
echo '参数错误';
return false;
}
}
iconv_file('./test');
?>