Check extension for php output

[phpbeginner]

I have an upload form where a user can upload either 1  .jpg or 1 document for each section of a webpage and the database is storing a link while the file is uploaded to a folder.

 

The form will only allow to upload one or the other, not both. On my output I want to distinguish wether the file is .jpg for some coding for an image. If it is not a .jpg extension then it will go into another area. Is there an easy way to do this ? Below is my code that I tried for the output.....

 

<?php
if($row[6]!=".jpg")
							{
                              echo("<p>
<img src='??????/" . $row[6] . "' align='left' hspace=10 vspace=5 width=100></p><p>" . $row[5] . "</p><br><br><br>");                                

                              
                         }
else
{
echo("<p>" . $row[5] . "</p>");
echo("<p><a href='??????" . $row[6] . "'>READ MORE</a></p>");
?>

[phpbeginner]

Does anyone have any tips for me on this ? Again, I just need to distinguish if $row[6] is a .jpg extension or not.

 

Thanks in advance.