I'm building a URL based on data extracted from mySQL and I want the text space.gif used as my default value should the variable $picture by NULL.

The results of the code below kick back a value for $picture when it is set in the database, but ignores the space.gif if the database result is empty.

If I flip the test from ! isset to isset then I get the space.gif for each result.

I've had no luck searching out an answer.

Thanks in advance.

--------------The Code-----------------------------
<?php do { ?>
<img src="images/<?php

if(! isset($picture)) {

echo $picture;

<p><span class="style2"><?php echo $row_rst_screenings['Title']; ?></ span><br /> <span class="style3"><?php echo $row_rst_screenings['Director']; ?></ span></p>
<p class="style4"><?php echo $row_rst_screenings['Blurb']; ?></p>
<p class="style3">Showtime: <?php echo $row_rst_screenings ['ShowTime']; ?> <?php echo $row_rst_screenings['ShowDate']; ?></p> <p class="style3">Location: <?php echo $row_rst_screenings ['Location']; ?></p>

<?php } while ($row_rst_screenings = mysql_fetch_assoc ($rst_screenings)); ?>


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