title: PHP regex:Find all 6 digit numbers in a string that do not end in 00
body: <p>I'm trying to find all the 6 digit numbers in a string that do not end in 00.
  Something like that
      <code>/([0-9]{4})([^00])/</code>   //i know this is wrong</p>
  
  <p>so the string  </p>
  
  <blockquote>
    <p><strong>asdfs dfg_123456_adsagu432100jhasj654321</strong></p>
  </blockquote>
  
  <p>will give me </p>
  
  <blockquote>
    <p><strong>results=[123456,654321] and not 432100</strong></p>
  </blockquote>
  
  <p>Thanks<br>
  Have a good day</p>