| Re: isset not working with select [message #181431 is a reply to message #181423] |
Wed, 15 May 2013 23:54   |
Denis McMahon
Messages: 634
Registered: September 2010
Karma:
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Senior Member |
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On Wed, 15 May 2013 17:12:36 -0400, richard wrote:
> On Wed, 15 May 2013 20:34:30 +0000 (UTC), Denis McMahon wrote:
>
>> On Wed, 15 May 2013 16:23:35 -0400, richard wrote:
>>
>>> if (isset($cov[0]) && is_string($cov[0]) && strlen(cov[0])>4)
>>> { echo "<img src='http://mroldies.net/covers/$year/".$cov[0]."'>"; }
>>>
>>> Returns a parse error of unexpected '['.
>>> where did I screw up at?
>>
>> I wrote: strlen( $cov[0] ) > 4 You wrote: strlen(cov[0])>4
>>
>> You missed a $ in the "strlen( $cov[0] ) > 4" test. That missing "$"
>> character is significant!
>>
>>> I want to check both images separately as I may have one set, but not
>>> both.
>>
>> Not unreasonable
>
> Ok so the code still shows the place holders for both.
I'm not 100% sure on how you have implemented the code.
Let me expand on the previous example - this generates separate images
for the two covers:
Given:
$cov = mysql_fetch_row($result);
Then:
if ( isset( $cov[0] ) && is_string( $cov[0] ) && strlen( $cov[0] ) > 4 ) {
// here you use $cov[0] in the output
echo "<img src='http://mroldies.net/covers/{$year}/{$cov[0]}'>";
/* --- in here --- */
} else {
// here you have an alternative output for $cov[0]
echo "Image 1 Not Available"
}
/* --- from here --- */
if ( isset( $cov[1] ) && is_string( $cov[1] ) && strlen( $cov[1] ) > 4 ) {
// here you use $cov[1] in the output
echo "<img src='http://mroldies.net/covers/{$year}/{$cov[1]}'>";
} else {
// here you have an alternative output $cov[1]
echo "Image 2 Not Available"
}
/* --- to here --- */
If however you only want the second image to display if the first image
is also present, then all the lines from the comment "/* --- from here
--- */" to the comment "/* --- to here --- */" should be moved up to the
place held by the comment "/* --- in here --- */"
You might in that case want to change the text output "Image 1 Not
Available" to "Images Not Available"
--
Denis McMahon, denismfmcmahon(at)gmail(dot)com
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