enable / disable button based on record inserted

I want to insert images into my db. once images uploaded view button, delete button to be enabled.
i try with anchor but 

Code:

<td align="center">
<a href="<?php echo base_url().'Users/deleteFile/'.$row['markid']; ?>"  name="idv"
 <i class="fa fa-remove" style="font-size:25px;color:red"></i>
</td>

Code:

<td align="center">
<a href="<?php echo base_url().'Users/viewfile/'.$row['markid']; ?>"  name="idv"
 <i class="fa fa-view" style="font-size:25px;color:red"></i>
</td>

how to solve this?