ajax - Can't figure out with character encoding in PHP -

i have put little utility reading youtube video tags. http://www.daviddresden.com/tagreader/

<?php header("content-type: application/json"); error_reporting(e_error | e_parse); $_post['fn']='https://www.youtube.com/watch?v=ogat8ehg0eo'; if(isset($_post['fn']) && $_post['fn'] != ''){     $url = htmlentities($_post['fn']);     $page_content = file_get_contents('https://www.youtube.com/watch?v=ogat8ehg0eo');       $dom_obj = new domdocument();     if($dom_obj->loadhtml($page_content)){          $dom_obj->loadhtml($page_content);         $meta_val = '';          foreach($dom_obj->getelementsbytagname('meta') $meta) {              if($meta->getattribute('property')=='og:video:tag'){                   $meta_val = $meta_val.','.$meta->getattribute('content');             }         }         echo substr($meta_val,1);     }     else{         echo "invalid url!";     } } else{     echo "empty url!"; } ?> 

it works asci characters utf characters show unreadable. can't find problem.

utf8_decode —

converts string iso-8859-1 characters encoded utf-8 single-byte iso-8859-1

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use utf8_decode output:

echo utf8_decode(substr($meta_val,1)) ; 

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set content-type utf-8

header('content-type: text/html; charset=utf-8'); 

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full code:

header('content-type: text/html; charset=utf-8'); $_post['fn']='https://www.youtube.com/watch?v=ogat8ehg0eo'; if(isset($_post['fn']) && $_post['fn'] != ''){     $url = htmlentities($_post['fn']);     $page_content = file_get_contents('https://www.youtube.com/watch?v=ogat8ehg0eo');       $dom_obj = new domdocument();     if($dom_obj->loadhtml($page_content)){          $dom_obj->loadhtml($page_content);         $meta_val = '';          foreach($dom_obj->getelementsbytagname('meta') $meta) {              if($meta->getattribute('property')=='og:video:tag'){                   $meta_val = $meta_val.','.$meta->getattribute('content');             }         }         echo utf8_decode(substr($meta_val,1)) ;     }     else{         echo "invalid url!";     } } else{     echo "empty url!"; }