Manipulate the text-part of a link

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February 25th, 2013, 11:34 AM

pooleleven

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PHP - Manipulate the text-part of a link

Hallo Forum,

in a PHP-Project I manipulate a simple link with:

PHP Code:


		
			
function replace_sulr($str) { 

$pattern = '#(^|[^\"=]{1})(http://|ftp://|mailto:|news:)([^\s<>]+)([\s\n<>]|$)#sm'; 

return preg_replace($pattern,"\\1<a href=\"\\2\\3\" target=\"_blank\" class=\"crmnewsdetail_link\"><span class=\"crmnewsdetail_linkq\">&nbsp;</span>\\3</a>\\4",$str);

 }

... and ist working.
But Part 3 is sometimes too long. I would like to shorten the "linkname" if it is longer than 50 letters. And I would like to shorten it from the middle:

wxw/en/snowboarding/episodes/1331581260962/chamaleon-the-project-begins
should become to:
xwx/en/sn...hamaleon-the-project-begins

(wxw for w..w because of the rules)

Is it possible to integrate this to a regex-pattern like this I'm using until now.

Thanks for your help!

February 25th, 2013, 12:00 PM

requinix

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Use preg_replace_callback() and make the callback function shorten $3 before returning the new string. Like

PHP Code:


		
			
function replace_sulr($str) {

    $pattern = '#(^|[^\"=]{1})(http://|ftp://|mailto:|news:)([^\s<>]+)([\s\n<>]|$)#sm';

    return preg_replace_callback($pattern, function($match) {

        $format = "%s<a href=\"%s%s\" target=\"_blank\" class=\"crmnewsdetail_link\"><span class=\"crmnewdetail_linq\">&nbsp;</span>%s</a>%s";

        list(, $before, $protocol, $url, $after) = $match;

        if (strlen($url) > 50) {

            $shorturl = substr($url, 0, 10) . "..." . substr($url, -20);

        } else {

            $shorturl = $url;

        }

        return sprintf($format, $before, $protocol, $url, $shorturl, $after);

    }, $str);

}