Hi,
Have tried to google this without 100% satisfaction.
A function reads a mysql record into an array and returns it, if it
doesnt exist it returns '' or FALSE.
What ways do I have to test that my returned array is not empty
--
zzapper
Best of VimTips
http://www.vim.org/tips/tip.php?tip_id=305
On Aug 13, 8:32 pm, zzapper
> Hi,
> Have tried to google this without 100% satisfaction.
>
> A function reads a mysql record into an array and returns it, if it
> doesnt exist it returns '' or FALSE.
>
> What ways do I have to test that my returned array is not empty
http://in2.php.net/empty
--
Email: rrjanbiah-at-Y!com Blog: http://rajeshanbiah.blogspot.com/
On Mon, 13 Aug 2007 17:32:33 +0200, zzapper
> Have tried to google this without 100% satisfaction.
>
> A function reads a mysql record into an array and returns it, if it
> doesnt exist it returns '' or FALSE.
>
> What ways do I have to test that my returned array is not empty
Something like the following?
if(empty($array)) echo '$array is empty';
?>
If you want an empty string, false, and an empty array handled seperatel=
y, =
you can use the following:
if($return===3Dfalse){ //notice the triple '=3D'
echo 'Function returned false';
} else if($return ===3D ''){
echo 'Function returned empty string.';
} else if(is_array($return) && empty($return)){
echo 'Function returned empty array.';
} else {
echo 'Function returned:';
var_dump($return);
}
?>
-- =
Rik Wasmus
On Aug 13, 10:32 am, zzapper
> Hi,
> Have tried to google this without 100% satisfaction.
>
> A function reads a mysql record into an array and returns it, if it
> doesnt exist it returns '' or FALSE.
>
> What ways do I have to test that my returned array is not empty
>
> --
> zzapper
> Best of VimTipshttp://www.vim.org/tips/tip.php?tip_id=305
The two immediate methods that pop into my head are as follows:
1.
if(count($array) == 0)
2.
if(empty($array))
There could be more, but these should do the job ok.
On Mon, 13 Aug 2007 17:32:33 +0200, zzapper
> --
> zzapper
BTW: your sig separator seems to be broken. It is supposed to be
dash-dash-space-newline. I'm missing the space over here (at least in
Opera), so your signature keeps getting in my quote.
--
Rik Wasmus
On Aug 13, 4:42 pm, "R. Rajesh Jeba Anbiah"
> On Aug 13, 8:32 pm, zzapper
>
> > Hi,
> > Have tried to google this without 100% satisfaction.
>
> > A function reads a mysql record into an array and returns it, if it
> > doesnt exist it returns '' or FALSE.
>
> > What ways do I have to test that my returned array is not empty
>
> http://in2.php.net/empty
Hi
The problem I have with empty() is as follows
$fred=array ('');
if (empty($fred)) { echo "empty";}
else {echo 'not empty';}
?>
reports not empty?
zzapper
On Aug 13, 10:57 am, zzapper
> On Aug 13, 4:42 pm, "R. Rajesh Jeba Anbiah"
>
>
> > On Aug 13, 8:32 pm, zzapper
>
> > > Hi,
> > > Have tried to google this without 100% satisfaction.
>
> > > A function reads a mysql record into an array and returns it, if it
> > > doesnt exist it returns '' or FALSE.
>
> > > What ways do I have to test that my returned array is not empty
>
> > http://in2.php.net/empty
>
> Hi
> The problem I have with empty() is as follows
>
>
> $fred=array ('');
> if (empty($fred)) { echo "empty";}
> else {echo 'not empty';}
> ?>
>
> reports not empty?
>
> zzapper
This is because the array technically has one element that is equal to
''. To deal with this you will probably either need to clean the array
first, removing any elements that are equal to '', or checking each
element as you process the array and handle the empty ones differently.
On Aug 13, 4:47 pm, Rik
> On Mon, 13 Aug 2007 17:32:33 +0200, zzapper
> > --
> > zzapper
>
> BTW: your sig separator seems to be broken. It is supposed to be
> dash-dash-space-newline. I'm missing the space over here (at least in
> Opera), so your signature keeps getting in my quote.
> --
> Rik Wasmus
I'm posting & viewing from Google groups, if you view source the page
my dash-dash-space-newline appears to be there.
But you are not the first to complain, so can somebody explain.
zzapper
On Mon, 13 Aug 2007 17:57:18 +0200, zzapper
> On Aug 13, 4:42 pm, "R. Rajesh Jeba Anbiah"
>
>> On Aug 13, 8:32 pm, zzapper
>>
>> > Hi,
>> > Have tried to google this without 100% satisfaction.
>>
>> > A function reads a mysql record into an array and returns it, if it=
>> > doesnt exist it returns '' or FALSE.
>>
>> > What ways do I have to test that my returned array is not empty
>>
>> http://in2.php.net/empty
>
> Hi
> The problem I have with empty() is as follows
>
>
>
> $fred=3Darray ('');
> if (empty($fred)) { echo "empty";}
> else {echo 'not empty';}
> ?>
>
> reports not empty?
Indeed. An array with zero values is empty, an array with values (be it =
=
NULL, false, whatever) is not.
If you want to know wether an array consists only of 'empty' values (doe=
s =
_not_ work recursively):
//sorry, can't think of a good name:
function only_empty_array_values($array){
$filtered =3D array_filter($array,'_not_empty');
return empty($filtered);
}
function _not_empty($var){
return !empty($var);
}
$ar =3D array('',false,null);
$check =3D only_empty_array_values($ar);
?>
Allthough it could be better, depending on circumstances, to rewrite the=
=
function that returns this 'array of empties' to one that simply returns=
=
false instead of the array if there are no results.
-- =
Rik Wasmus
zzapper wrote:
> On Aug 13, 4:47 pm, Rik
>> On Mon, 13 Aug 2007 17:32:33 +0200, zzapper
>>> --
>>> zzapper
>> BTW: your sig separator seems to be broken. It is supposed to be
>> dash-dash-space-newline. I'm missing the space over here (at least in
>> Opera), so your signature keeps getting in my quote.
>> --
>> Rik Wasmus
>
> I'm posting & viewing from Google groups, if you view source the page
> my dash-dash-space-newline appears to be there.
> But you are not the first to complain, so can somebody explain.
> zzapper
>
I just viewed the source in your original message. Rik is correct. The
trailing space is missing. All you have is dash-dash-newline.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================
On 13.08.2007 17:32 zzapper wrote:
> Hi,
> Have tried to google this without 100% satisfaction.
>
> A function reads a mysql record into an array and returns it, if it
> doesnt exist it returns '' or FALSE.
>
> What ways do I have to test that my returned array is not empty
if(array_filter($ary))
$ary contains at least one non-empty element
else
$ary contains 0 elements or all elements are empty
--
gosha bine
makrell ~ http://www.tagarga.com/blok/makrell
php done right ;) http://code.google.com/p/pihipi
On Mon, 13 Aug 2007 18:36:20 +0200, gosha bine
wrote:
> On 13.08.2007 17:32 zzapper wrote:
>> Hi,
>> Have tried to google this without 100% satisfaction.
>> A function reads a mysql record into an array and returns it, if it
>> doesnt exist it returns '' or FALSE.
>> What ways do I have to test that my returned array is not empty
>
>
> if(array_filter($ary))
> $ary contains at least one non-empty element
> else
> $ary contains 0 elements or all elements are empty
Hmmz, didn't know this would work, but offcourse simple converting to
boolean would do the trick, away with my functions :)
--
Rik Wasmus
On Aug 13, 5:39 pm, Rik
> On Mon, 13 Aug 2007 18:36:20 +0200, gosha bine
> wrote:
>
> > On 13.08.2007 17:32zzapperwrote:
> >> Hi,
> >> Have tried to google this without 100% satisfaction.
> >> A function reads a mysql record into an array and returns it, if it
> >> doesnt exist it returns '' or FALSE.
> >> What ways do I have to test that my returned array is not empty
>
> > if(array_filter($ary))
> > $ary contains at least one non-empty element
> > else
> > $ary contains 0 elements or all elements are empty
>
Like it
Are we going to vote this best solution?
zzapper
On Mon, 13 Aug 2007 22:33:27 +0200, zzapper
> On Aug 13, 5:39 pm, Rik
>> On Mon, 13 Aug 2007 18:36:20 +0200, gosha bine
>> wrote:
>>
>> > On 13.08.2007 17:32zzapperwrote:
>> >> Hi,
>> >> Have tried to google this without 100% satisfaction.
>> >> A function reads a mysql record into an array and returns it, if it
>> >> doesnt exist it returns '' or FALSE.
>> >> What ways do I have to test that my returned array is not empty
>>
>> > if(array_filter($ary))
>> > $ary contains at least one non-empty element
>> > else
>> > $ary contains 0 elements or all elements are empty
>>
> Like it
>
> Are we going to vote this best solution?
>
Except it might be better for the function to return false instead of an
empty array, yes indeed, I'd say so :)
--
Rik Wasmus