How can i give a condition if the link is selected then it go through this condition [closed]

 <a href="">Select a Product First</a>      </td>
  <td align="left" valign="top" bgcolor="#F0F0F0">&nbsp;</td>
  <td align="left" valign="top" bgcolor="#F0F0F0">&nbsp;</td>
</tr>

<tr>
  <td colspan="3" align="left" valign="middle" bgcolor="#F0F0F0">
    @if("")
    <?php
      $product_image=DB::table('product_images')->where('product_id',$product_id)->first();
    ?>
    <img src="{!! asset('image/product/'.$product_image->image) !!}" width="60" height="70">&nbsp;&nbsp;<br>&nbsp;&nbsp;<br>Price : Tk. . <br>Point : {5}<input name="spro" type="hidden" value="37" required="required"><input name="sprop" type="hidden" value="1000"><input name="pro_point" type="hidden" value="5">   </td>
  <input name="spro" type="text" value=""  placeholder="Select a Product First" class="s9" maxlength="0">     </td>
</tr>
    @endif

If anyone can help me to apply the condition

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