How to limit my regex that is detecting too much? -


i have regex attempting detect title & link markup:

[title](http://link.com)

so far have:

(\[)(.*?)(\])(\(((http[s]?)|ftp):\/\/)(.*?)(\))

which detecting when untitled link markup before it

[http://google.com] [digg](http://digg.com) [internal page] random other text [digg](http://digg.com)

how can limit regex titled link?

full php titled & untitled links:

    // titled links     // [digg](http://digg.com)     // [google](http://google.com)     $text = preg_replace_callback(         '/(\[)(.*?)(\])(\(((http[s]?)|ftp):\/\/)(.*?)(\))/',         function ($match) {             $link = trim($match[7]);             $ret = "<a target='_blank' href='" . strtolower($match[5]) . "://" . $link . "'>" . trim($match[2]) . "</a>";             if (strtolower($match[5]) == "http") {                 $ret .= "<img src='/images/link_http.png' class='link' />";             } else if (strtolower($match[5]) == "https") {                 $ret .= "<img src='/images/link_https.png' class='link' />";             } else if (strtolower($match[5]) == "ftp") {                 $ret .= "<img src='/images/link_ftp.png' class='link' />";             }             return $ret;         },         $text     );      // untitled links     // [internal page]     // [http://google.com]     $text = preg_replace_callback(         '/(\[)(.*?)(\])/',         function ($match) {             $link = trim($match[2]);              $ret = "";             if ($this->startswith(strtolower($link), "https")) {                 $ret = "<a target='_blank' href='" . $link . "'>" . $link . "</a>";                 $ret .= "<img src='/images/link_https.png' class='link' />";             } else if ($this->startswith(strtolower($link), "http")) {                 $ret = "<a target='_blank' href='" . $link . "'>" . $link . "</a>";                 $ret .= "<img src='/images/link_http.png' class='link' />";             } else if ($this->startswith(strtolower($link),  "ftp")) {                 $ret = "<a target='_blank' href='" . $link . "'>" . $link . "</a>";                 $ret .= "<img src='/images/link_ftp.png' class='link' />";             } else {                 $link = str_replace(" ", "_", $link);                 $ret = "<a href='" . $link . "'>" . trim($match[2]) . "</a>";             }             return $ret;         },         $text     );

if you're trying go through markdown links, you'll want grab regex , logic straight source:

https://github.com/michelf/php-markdown/blob/lib/michelf/markdown.php#l510

https://github.com/tanakahisateru/js-markdown-extra/blob/master/js-markdown-extra.js#l630


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