PHP Chinese character interception function_PHP tutorial

Chinese character interception function
//The string to be intercepted, $num the length to be intercepted, return the intercepted string

public function substrgb($in,$num)
    {
      //$num=16;
      $pos=0;
      $bytenum=0;
      $out="";
      while($num){
    
    $c=mb_substr($in,$pos,1,"euc-jp");
    if($c=="n") break;
    if(strlen($c)==1){
      $pos++;
      $bytenum++;
      if($bytenum>$num) break;
      $out.=$c;                        
    }
    else
      {
        $pos++;
        $bytenum=$bytenum+2;
        if($bytenum>$num) break;
        $out.=$c;                   
      }
      }
      return $out;
    }

http://www.bkjia.com/PHPjc/447005.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/447005.htmlTechArticleChinese character interception function //String to be intercepted, $num length to be intercepted, return the intercepted string public function substrgb($in,$num) { //$num=16; $pos=0; $bytenum=0; $out=; while(...