title: unique number with function uniqid()
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/6884912/how-is-create-a-unique-tracking-code">how is create a unique tracking code</a>  </p>
  </blockquote>
  
  
  
  <p>how can create a unique tracking code with function <strong>uniqid()</strong> for insert in <strong>database</strong>?<br>
  What is your suggestion?<br></p>
  
  <p>The number of characters not more than <strong>10</strong> and use only of <strong>number</strong> .<br>
  Please call <strong>example powerful</strong>...<br>
  With respect</p>