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Posted by Jerry Stuckle on 08/31/07 01:49
Fred Atkinson wrote:
> On Thu, 30 Aug 2007 00:14:36 -0400, Jerry Stuckle
> <jstucklex@attglobal.net> wrote:
>
>> Fred Atkinson wrote:
>>> On Tue, 28 Aug 2007 16:17:09 +0100, "peter" <submit@flexiwebhost.com>
>>> wrote:
>>>
>>>>> It returns null, which brings up a blank image.
>>>> then you can simply do something such as:-
>>>>
>>>> <?PHP
>>>> $image = getRandomImage('LL/');
>>>> if (is_null($image))
>>>> {
>>>> $image = '';// Set to the image you wish
>>>> }
>>>> echo "<img src='$image' height=90 width=120 alt='LL'>";
>>>> ?>
>>>>
>>>> in the if statement place the path and name of the image you want to use as
>>>> the image that will be displayed if nothing is returned from the function.
>>>>
>>> When I use this:
>>>
>>> <?php
>>> $image = getRandomImage('LL/');
>>> if (is_null($image))
>>> {
>>> $image = 'none.jpg';// Set to the image you wish
>>> }
>>> echo "<img src='$image' height=90 width=120 alt='LL'>";
>>> ?>
>>>
>>> and pull up the Web page I look at the source and I see this:
>>> <img src='' height=90 width=120 alt='LL'>
>>>
>>> As you can see the 'none.jpg' default file is not coded into
>>> the resulting HTML.
>>>
>>> Any idea why?
>>>
>>> Regards,
>>>
>>>
>>>
>>> Fred
>>>
>> Because it's returning an empty string - which is NOT the same as null.
>
> As you can see, I am defining the string as none.jpg. I can't
> imagine why it still thinks it is null.
>
>
>
>
> Fred
>
Read what I said again.
And no, you're not. You're checking:
if (is_null($image))
And the test is false because it's not null. So you're not setting it
to none.jpg.
It never was null, and PHP doesn't think it's null.
NULL IS NOT THE SAME AS AN EMPTY STRING!
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
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