title: How to create hmac md5 in php?
body: <p>I am working with payU credit card systems. But I dont manage.
  payU tells me that I have to create hmac md5 hashes.</p>
  
  <p>My secret key is : 3~9#[X4^660?ak+]h6%T
  I want to convert to a HMAC_MD5 hash : 8GEMISEPE6208617192012-12-15 15:58:476Deneme117Deneme202103NET112242103TRY2107Antalya7Antalya2TR8CCVISAMC2,3,7,10,12</p>
  
  <p>What's the php code?</p>