Question

If i type

www.google.com or http://www.google.com

using auto_link() function will add link correctly..

However, if i type

google.com

the function doesnt work since the www. part is missing…

how can i make sure it will include these links as well??

This is the function from codeigniter:

/**
 * Auto-linker
 *
 * Automatically links URL and Email addresses.
 * Note: There's a bit of extra code here to deal with
 * URLs or emails that end in a period.  We'll strip these
 * off and add them after the link.
 *
 * @access  public
 * @param   string  the string
 * @param   string  the type: email, url, or both
 * @param   bool    whether to create pop-up links
 * @return  string
 */
if ( ! function_exists('auto_link'))
{
    function auto_link($str, $type = 'both', $popup = FALSE)
    {
        if ($type != 'email')
        {
            if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
            {
                $pop = ($popup == TRUE) ? " target=\"_blank\" " : "";

                for ($i = 0; $i < count($matches['0']); $i++)
                {
                    $period = '';
                    if (preg_match("|\.$|", $matches['6'][$i]))
                    {
                        $period = '.';
                        $matches['6'][$i] = substr($matches['6'][$i], 0, -1);
                    }

                    $str = str_replace($matches['0'][$i],
                                        $matches['1'][$i].'<a href="http'.
                                        $matches['4'][$i].'://'.
                                        $matches['5'][$i].
                                        $matches['6'][$i].'"'.$pop.'>http'.
                                        $matches['4'][$i].'://'.
                                        $matches['5'][$i].
                                        $matches['6'][$i].'</a>'.
                                        $period, $str);
                }
            }
        }

        if ($type != 'url')
        {
            if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
            {
                for ($i = 0; $i < count($matches['0']); $i++)
                {
                    $period = '';
                    if (preg_match("|\.$|", $matches['3'][$i]))
                    {
                        $period = '.';
                        $matches['3'][$i] = substr($matches['3'][$i], 0, -1);
                    }

                    $str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str);
                }
            }
        }

        return $str;
    }
}

SOLUTION :
function auto_link($str, $type = ‘both’, $popup = FALSE)
{
if ($type != ’email’)
{
if (!preg_match_all(“/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/”, $str, $matches)){

        if (preg_match_all("/(?:https?\:?(?:\/\/)?|www\.)?([a-zA-Z0-9\-\.]+\.(?:.[a-z]*))/mi", $str, $matches))
        {
            $pop = ($popup == TRUE) ? " target=\"_blank\" " : "";

            for ($i = 0; $i < count($matches['0']); $i++)
            {

                            $str = str_replace($matches[0][$i],
                                                '<a href="http://'.$matches[1][0].'" class="auto_link_color">'.$matches[1][0].'</a>', $str);
            }
        }
            }else{
                for ($i = 0; $i < count($matches['0']); $i++)
                {
                    $str = str_replace($matches[0][$i], $matches[0][0], $str);
                }
            }
    }

    return $str;
}

This solved my problems so whatever link the user enters will find it and add a link… Even if the user enters an email it wont add links on the domain part but instead will show it as text.

Answer 1

function auto_link($str, $type = 'both', $popup = FALSE)
{
    if ($type != 'email')
    {
            if (!preg_match_all("/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\\.([a-zA-Z])+([a-zA-Z])+/", $str, $matches)){

        if (preg_match_all("/(?:https?\:?(?:\/\/)?|www\.)?([a-zA-Z0-9\-\.]+\.(?:.[a-z]*))/mi", $str, $matches))
        {
            $pop = ($popup == TRUE) ? " target=\"_blank\" " : "";

            for ($i = 0; $i < count($matches['0']); $i++)
            {

                            $str = str_replace($matches[0][$i],
                                                '<a href="http://'.$matches[1][0].'" class="auto_link_color">'.$matches[1][0].'</a>', $str);
            }
        }
            }else{
                for ($i = 0; $i < count($matches['0']); $i++)
                {
                    $str = str_replace($matches[0][$i], $matches[0][0], $str);
                }
            }
    }

    return $str;
}

This solved my problems so whatever link the user enters will find it and add a link… Even if the user enters an email it wont add links on the domain part but instead will show it as text.