Url`s automatisch in links umwandeln

<?php


function html_links($str) {
 $str = preg_replace('"(((f|ht){1}tp://)[a-z0-9-.] [.]{1}[a-z]{1,6}[-a-z0-9@:%_$.! *, .~#;?&//=]*)"i', '<a href="$1">$1</a>', $str);
 $str = preg_replace('"([snr>]{1}|^)((www.)[a-z0-9-]{1,255}[.]{1}[a-z]{1,6}[-a-z0 -9@:%_$.!*, .~#;?&//=] )"i', '$1<a href="http://$2">$2</a>', $str);
 $str = preg_replace('"(([snr>]){1}|mailto:|^)(([-a-z0-9@:%_$.!*,; .~#;?&//=] )@([a-z0-9-.] [.]{1}[a-z]{1,6}))"i', '$2<a href="mailto:$3">$3</a>', $str);
 $str = preg_replace('"(((f|ht){1}tp://)([0-9]{1,3}([./sn]|$){1}){4}[-a-z0-9@:%_$.!*, .~#;?&//=]*)"i', '<a href="$1">$1</a>', $str);
 return $str;
 }


    $host = "localhost";     
    $user = "user";            
    $pass = "password";             
    $dbase = "database";            


     


    $connection = mysql_connect("$host" , "$user" , "$pass") 


                  OR die ("Keine Verbindung zu der Datenbank moeglich.");


    $db = mysql_select_db($dbase , $connection) 


                  OR die ("Auswahl der Datenbank nicht moeglich."); 

    $x = $_GET['nid'];


    $query = "SELECT * FROM files,node_revisions WHERE files.nid = '$x' AND node_revisions.nid = '$x' AND files.filename = '_original' ";

    $abfrage = mysql_query($query) or die (mysql_error());

    while ($row = mysql_fetch_array($abfrage)) {

        $title = $row['title'];
        $bild = $row['filepath'];
        $body = $row['body'];

        echo "<tr><td><strong>".$title."</strong></td></tr><br><br>";
        echo "<tr><td><img src=\"".$bild."\" title=\"\" alt=\"\"></td><tr>\n";
        echo "<tr><td><pre>".html_links($body)."</pre></td></tr><br>";

        echo "<a href=\"index.php\">zurück</a>";

    }
    mysql_close();
?>

while ($row = mysql_fetch_array($abfrage)) {

        $title = $row['title'];
        $bild = $row['filepath'];
        $body = $row['body'];

        echo "<tr><td><strong>".$title."</strong></td></tr><br><br>";
        echo "<tr><td><img src=\"".$bild."\" title=\"\" alt=\"\"></td><tr>\n";
        echo "<tr><td><pre>".html_links($body)."</pre></td></tr><br>";

        echo "<a href=\"index.php\">zurück</a>";

    }

function html_links($str, $attributes=array()) {
  $attrs = '';
  foreach ($attributes as $attribute => $value) {
    $attrs .= " {$attribute}=\"{$value}\"";
  }
$str = ' ' . $str;
$str = preg_replace(
  '`([^'=\'>])(((http|https|ftp)://|www.)[^\s<]+[^\s<\.)])`i',
  '$1<a href="$2"'.$attrs.'>$2</a>',
  $str
);
$str = substr($str, 1);
$str = preg_replace('`href=\"www`','href="http://www',$str);
return $str;
}