index.php

<!-- AddThis Button BEGIN -->
<div class="addthis_toolbox addthis_default_style " style="float:right">
<a class="addthis_button_facebook"></a>
<a class="addthis_button_twitter"></a>
<a class="addthis_button_mendeley"></a>
<a class="addthis_button_compact"></a>
</div>
<script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=xa-52a9e0ad19a2b09d"></script>
<!-- AddThis Button END -->

<?php
define("prefix",10.1234);
?>
 
<form method="post" action="./?q=Unique_DOI_Generator" >
<input type="text" value="<?php echo prefix,'/',uniqid(); ?>" />
<input type="submit" value="generate" />
</form>