Detect if a link is provided within text in textarea

Question

Possible Duplicate:
php html create link from text

How can i convert written urls within text posted by user in textarea into clickable links using php ?

Answer 1

distinguish your link from the regular text by wrapping it. like [link]http://example.be[/link]

Then parse the text with php and transform the [link] tags into html link tags

or use a regular expression to detect urls in your text.

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Answer 2

you could use php's preg_replace function

 <?
    $string = "[url]http://stackoverflow.com[/url]";
    $search = array("/\[url]([^'\"]*)\[\/url]/iU");
    $replace = array("<a href=\"\\1\" target=\"_blank\">\\1</a>");
    echo preg_replace($search, $replace, $string);
 ?>