PHP Regular expression get title keyword and content code

Collection in the current CMS are often used to Oh, let's take a look at the PHP regular expression of title, keyword, content code OH.

Get title
$inarr = Array ();
Preg_match ("/<title> (. *) </title>/isu", $body, $inarr);
if (Isset ($inarr [1]))
{
$redatas [' title '] = $inarr [1];
}

Get keywords
$inarr = Array ();
Preg_match ("/<meta[s]+name=[" "]keywords[" "] content=["] (. *) [']/isu ', $body, $inarr);
if (Isset ($inarr [1]))
{
$redatas [' keywords '] = cn_substr (Html2text ($inarr [1]), 30);
}

Get summary
$inarr = Array ();
Preg_match ("/<meta[s]+name=[" "]description[" "] content=["] (. *) [']/isu ', $body, $inarr);
if (Isset ($inarr [1]))
{
$redatas [' description '] = Cn_substr (Html2text ($inarr [1]), $cfg _auot_description);
}

  //Get content
  if ($s!= ' && $e!= ')
  {
    $redatas [' body '] = GETHTMLAREAA ($s, $e, $body);
   if ($redatas [' Body ']!= ' && $redatas [' description ']== ')
   {
     $redatas [' description '] = Cn_substr (Html2text ($redatas [' body ']), $GLOBALS [' Cfg_auot_ Description ']);
   }
  }
 }
 return $redatas;