External link code function in PHP regular string

PHP Tutorial External link code function in regular string

function Deleteemptyarray ($val)
{
$links = ';
if (Is_array ($val))
{
foreach ($val as $v =>$_v)
{
if (!empty ($_v[0))
{
$links. =$_v[0]. ' | '
}
}
Return substr ($links, 0,-1);
}
Else
{
return false;
}
}

Function Getoutlink ($body)
{
 
  $tempcontent = $body;
 preg_match_all ("/<a (. *?) Href= (. *?) </a>/i ", $tempcontent, $tempurl);
  $urls =array ();
 foreach ($tempurl [0] as $value)
 {
  if (strstr ($value, ' http ')
  {
    if (Stristr ($value, $localurl))
   {
    re-enters
  }
    Else
   {   
    preg_match_all ("/hrefs*=s*" ([' "]?) (.*?) 1/is ", $value, $vlink);   
    $urls [] = $vlink [2];
  }
 }
 }
 //print_r ($urls);
  $strurl = explode (' | ', Deleteemptyarray ($urls));
  $tempcount = Array_unique ($strurl);
 echo ' &nbsp; outer chain '. COUNT ($tempcount)-1;
}
//Call method

$body = "<a href=/ab.htm>aaa</a><a href=http://www.jzread.com> I am an external connection </a>";
Echo Getoutlink ($body);