Extract text from link

Question

I'd like to extract onclick="printcoupon('292')" from this:

 [url=http://stackoverflow.com?foo=bar|onclick=printcoupon('292')]foobarbaz[/url]

The text inside the onclick can change dynamically but what I was thinking of was detecting if there is a word onclick inside this and if so grab the contents inside the double quotes (currently it says printcoupon('292') )

Basically though i need to grab either onclick=printcoupon('292') or just printcoupon('292').

Either way, this is unfamiliar territory.

    function bbcode($str) {
      // situation when str = [url=http://stackoverflow.com?foo=bar|onclick=printcoupon('292')]foobarbaz[/url]
      if(stristr($str,'onclick')){
        $parts=explode('|',$str);
        var_dump($parts);die();
        $str=preg_replace('/\[url=(.+?)\](.+?)\[\/url\]/', '<a href="\1" style="text-decoration:none;color:#336699" onclick="PUT ONCLICK EXTRACTED CONTENT HERE">\2</a>', $str);

      // situation when str = [url=http://stackoverflow.com?foo=bar]foobarbaz[/url]
      } else {
        $str=preg_replace('/\[url=(.+?)\](.+?)\[\/url\]/', '<a href="\1" style="text-decoration:none;color:#336699">\2</a>', $str);
      }
      return $str;
    }

So as you can see,

What is used to output the HTML code in the first place? When you output it can you not just do whatever you need to do with the value then? — Mike, Apr 28 '16 at 19:49
@JoseManuelAbarcaRodríguez Close. I can either grab `onclick=printcoupon('292')` or just `printcoupon('292')`. Not > though — slicks1, Apr 28 '16 at 19:51
Possible duplicate of [How to extract img src, title and alt from html using php?](http://stackoverflow.com/questions/138313/how-to-extract-img-src-title-and-alt-from-html-using-php) — Mike, Apr 28 '16 at 19:51
@JoseManuelAbarcaRodríguez My question was incorrect. Please see now — slicks1, Apr 28 '16 at 19:52
@JoseManuelAbarcaRodríguez Code up. Yeh I'm looking at that now but did you see my code updates? I'm not actually using vanilla html and I wouldn't know im only able to scan for onclick — slicks1, Apr 28 '16 at 20:00

score 0 · Accepted Answer · answered Apr 28 '16 at 20:04

If the substring you want ALWAYS begins with "onclick=" and ALWAYS ends with ")]", you can do this :

<?php
$s = "[url=http://stackoverflow.com?foo=bar|onclick=printcoupon('292')]foobarbaz[/url]";
$onclick = strpos( $s,"onclick=" ); // POSITION OF "ONCLICK=".
$closed_parenthesis = strpos( $s,")]" ); // POSITION OF ")]".
echo substr( $s,$onclick,$closed_parenthesis - $onclick + 1 );
?>

Extract text from link

1 Answers1