Assigning class objects to variables

[Cory Bosma]

Looked all over for the answer to this but can't find it. Maybe I'm
searching for the wrong thing. I'm new to using classes in PHP.

Whenever I try and reference the member's ($line) properties or
functions I either get blank for properties or "Call to a member
function on a non-object" for functions. I'm sure I'm doing something
incorrectly with the assignment.

function LineGroup($clas sarray)
{
$groupout = "";

while ($line = each($classarra y))
{
$groupout .= "<tr><td>".$lin e -> GetCat1Desc()." </td></tr>";
}

return $groupout;
}

also even when I try the following the same problem occurs

function LineGroup($clas sarray)
{
$groupout = "";

$groupout .= "<tr><td>".$cla ssarray[0] ->
GetCat1Desc()." </td></tr>";

return $groupout;
}

Any help would be greatly appreciated.

Thanks, Cory

[Henk Verhoeven]

Re: Assigning class objects to variables

Hi Cory,
[color=blue]
> while ($line = each($classarra y))[/color]

In general you should make loops like this:

reset($classarr ay);
while (list($key) = each($classarra y)) {
$line =& $classarray[$key];

but this will work too:

reset($classarr ay);
while (list($key, $line) = each($classarra y))

but has the disadvantage of copying each object in $classarray when it
is assigned to $line. Copying decreases performance and uses up memory
that is only freed at the end of your script.
[color=blue]
> $groupout .= "<tr><td>".$cla ssarray[0]->GetCat1Desc( ).[/color]
"</td></tr>";

I do't know, maybe there is no element with index 0? try:
print_r($classa rray);
then select "view source" in your browser, so that you can see what's in
the array under what keys.

Greetings,

Henk Verhoeven,
www.phpPeanuts.org.

BTW, i would expect:
$objectarray = array( new SomeClass('firs t'), new SomeClass('seco nd') );

$classarray = array('someclas s', 'someotherclass ');
so that i can do:
if (in_array(get_c lass($objectarr ay[0]), $classarray) )
print "the class of object 0 is in the class array";

just a matter of avoiding misleading names.

Cory Bosma wrote:[color=blue]
> Looked all over for the answer to this but can't find it. Maybe I'm
> searching for the wrong thing. I'm new to using classes in PHP.
>
> Whenever I try and reference the member's ($line) properties or
> functions I either get blank for properties or "Call to a member
> function on a non-object" for functions. I'm sure I'm doing something
> incorrectly with the assignment.
>
> function LineGroup($clas sarray)
> {
> $groupout = "";
>
> while ($line = each($classarra y))
> {
> $groupout .= "<tr><td>".$lin e -> GetCat1Desc()." </td></tr>";
> }
>
> return $groupout;
> }
>
> also even when I try the following the same problem occurs
>
> function LineGroup($clas sarray)
> {
> $groupout = "";
>
> $groupout .= "<tr><td>".$cla ssarray[0] ->
> GetCat1Desc()." </td></tr>";
>
> return $groupout;
> }
>
> Any help would be greatly appreciated.
>
> Thanks, Cory[/color]