Problem with number_format

I can't see the problem with this.
<?php
                        if ($ROW['BASEMENT'] == "0")
                        {
                              $work = "";
                        }
                        else
                        {
                      $work = number_format("$ROW[BASEMENT]");
                        }
                        echo $work;
                        ?>
                  </td>
         
            <td width = 5% class = "Space_Display" style="padding-left:15px">Ceiling:
                  </td>
           
            <td width = 10% class = "Space_Display" align="right" style="padding-left:15px">
                        <?php
                        if ($ROW['CEILING'] == "0")
                        {
                              $work = "";
                        }
                        else
                        {
                              $work = number_format("$ROW[CEILING]");
                        }
                        echo $work;
                        ?>
                  </td>

$ROW[BASEMENT] WORKS but  $ROW[CEILING] returns the following error:

Warning: number_format() expects parameter 1 to be double, string given in /home/mrbreeze/public_html/chris/Space_Display.php on line 267

WTF?

Thanks
Glenn
breeze351Asked:
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Dave BaldwinFixer of ProblemsCommented:
Assuming there is nothing but numbers in your string, the easiest thing is to multiply it by 1 so PHP thinks it's  number.  If it starts with numbers but has text after the numbers, that usually still works.  But if it starts with text or punctuation, then it won't, it will just be a string.
ChloesDadCommented:
Why have you put the $ROW[CEILING] inside speech marks, as I think that this will then try and turn the text "$ROW[CEILING]" into a number rather than the content of $ROW[CEILING] into a number.

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breeze351Author Commented:
My bad!!!!  I've been dealing with customers since the 80's.  I should know better than to trust what they say.  They provided the database.  "You're code is F!!!! up.  Ceiling is a numeric!!!"  Guess what, "12" is a numeric but "12'6" (as in 12 feet 6 inches) is not.
Thanks
Glenn
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