PHP - Add link to a URL in a string if not present

Question

Lets say i had a string as in $str ::

$str = "Test,

Here\'s an interesting in-house litigation position with JPMorgan Chase in New York I thought you might be interested inL

<a href="http://www.example.com/lcdetail.php?akey=e1725">http://www.example.com/lcdetail.php?akey=e1725</a>

They are not using recruiters to fill this job, so if you are interested you can just apply directly.  

http://www.example.com/lcdetail.php?akey=e1725

Cordially
--Harrison";

Now i want to added tag to the links whom tag is not present.

I had used this function but not returning desired value.

function processString($s){  
  return preg_replace('@(?<!href=")(https?:\/\/[\w\-\.!~?&=+\*\'(),\/]+)((?!\<\/\a\>).)*@i','<a href="$1">$1</a>',$s);
}

My requirement is NOT to ADD anchor tag in link if it is present and ADD to those which haven't.

Thanks.

Enissay · Accepted Answer · 2013-09-09 13:01:09Z

4

Well, I just modified your lookbehind path to (?<!href="|">) to avoid the link inside the tags...

So use :

function processString($s){  
  return preg_replace('@(?<!href="|">)(https?:\/\/[\w\-\.!~?&=+\*\'(),\/]+)((?!\<\/\a\>).)*@i','<a href="$1">$1</a>',$s);
}

Regex101 Demo

Codepad Demo

edited Sep 9, 2013 at 13:01

answered Sep 9, 2013 at 12:53

Enissay

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