<?php for ($i="0"; $i <= 2; $i++) { echo "<td><a href=\"javascript:myclick($i)\">".$row_result["rock"]."</a></td>"; } ?>
Standard input is empty
<td><a href="javascript:myclick(0)"></a></td><td><a href="javascript:myclick(1)"></a></td><td><a href="javascript:myclick(2)"></a></td>