Remove all text in string until it reaches multiple characters match
<p>I want to remove everything after this is matches: </p>

<pre><code>/**
</code></pre>

<p>My string is:</p>

<blockquote>
  <p>/r/_ylt=A0oG7lyFHLZQjSEAWltXNyoA;_ylu=X3oDMTE0NGYxbHRnBHNlYwNzcgRwb3MDOQRjb2xvA2FjMgR2dGlkA1ZJUDA0OV83Nw--/SIG=11pqblim6/EXP=1354140933/**http%3a//www.hellomagazine.com/royalty/" target="_blank" data-bk="5254.1" dirtyhref="/r/_ylt=A0oG7lyFHLZQjSEAWltXNyoA;_ylu=X3oDMTE0NGYxbHRnBHNlYwNzcgRwb3MDOQRjb2xvA2FjMgR2dGlkA1ZJUDA0OV83Nw--/SIG=11pqblim6/EXP=1354140933/**http%3a//www.hellomagazine.com/royalty/</p>
</blockquote>

<p>I want to remove everything before <code>/**</code></p>

<p>I can make it match by 1 character, but how can i do it for multiple characters?</p>
