Нужна функция для преобразование Url в ссылку

[SandyMAN]

mojet prigoditsja, dlja teh kto ne hochet wositsja s RegExp:
eto funkcija rabotaet u menja na odnom saite.

$bulletinStringToOut - eto tekst w katorom mogut wstrechatsja URL's. Pri nahojdenii kotorih oni samenjautsja na linki.

na wiwode otformatirovannii text ( $stringToOut)

=====

PHP код:

function insertLinks($bulletinStringToOut){
                        # $bulletinStringToOut - free text (with URL's or no)

                        $bulletinStringToOut = $bulletinStringToOut . " ";

                        $len = strlen($bulletinStringToOut);
                        $stringToOut = "";
                        $pos1 = 0;
                        $positionSeparate = 0;

                        $pos = strpos($bulletinStringToOut, "http://");

                        if(is_integer($pos)){

                                while($pos1 < $len){

                                        $string = substr($bulletinStringToOut, $pos1);
                                        $pos    = strpos($string, "http://");
                                        
                                        if(is_integer($pos)){
                                                # string "href://" found
                                                # replace 'href://xxx' string to '<a href=href://xxx>href://xxx</a>'
                                        
                                                $stringPrev = substr($string, 0, $pos-1);
                                                $stringNext = substr($string, $pos);
                                        
                                                $positionSeparate = strpos($stringNext, " ");
                                                $positionSeparate2 = strpos($stringNext, "\n");
                                                if($positionSeparate2 <= $positionSeparate+1){
                                                        $positionSeparate = $positionSeparate2;
                                                }


                                                $href = substr($stringNext, 0, $positionSeparate);
                                                // remove dots, commas and other symb. from end of the link

                                                $hrefLen = strlen($href);
                                                //echo substr($href,$hrefLen-2,1);
                                                if(substr($href,$hrefLen-2,1) == "." ||
                                                   substr($href,$hrefLen-2,1) == "," ||
                                                   substr($href,$hrefLen-2,1) == ";" ||
                                                   substr($href,$hrefLen-2,1) == ":" ||
                                                   substr($href,$hrefLen-2,1) == "-"){
                                                        $href = substr($href,0,$hrefLen-2);
                                                }

                                                $link = "<a class='stud' href='" . trim($href) . "'>" . trim($href) . "</a> ";
                                        
                                                $stringToOut .= " $stringPrev $link ";

                                                $pos1 += $pos + $positionSeparate ;
                                        }
                                        else{
                                                $stringToOut .= substr($bulletinStringToOut, $pos1);
                                                break;
                                        }
                                }
                        }
                        else{
                                # URL's not found in text
                                $stringToOut = $bulletinStringToOut;
                        }

                        return $stringToOut;
                }