$icerik .= '<div id=manset'.$j.'b style="DISPLAY: '.$durum.'"><font face="Arial" style="font-size:12px; "></font><br>'.substr($niphell[post_content],0,250).'</div>

$content = explode(" ", $niphell[post_content], 15); 
array_pop($content);
$content = implode(" ",$content);
$icerik .= '<div id=manset'.$j.'b style="DISPLAY: '.$durum.'"><font face="Arial" style="font-size:12px; "></font><br>'.$content.'</div>