php判断文本文档字符编码

跳至

function chkCode($string){
 $code = array('UTF-8','GBK','GB18030','GB2312');
 foreach($code as $c){
  if( $string === iconv('UTF-8', $c, iconv($c, 'UTF-8', $string))){
   return $c;
  }
 }
 return "no";
}

$file1 = 'test1.txt';
$str1 = file_get_contents($file1);
echo chkCode("$str1");