another argument passing problem :-(

[Andy]

Hi all,

Sorry to present you all with another boring problem but I've spent
all day trying to get this to work with no success.

Below is a function to which I pass the argument &$myCell (which is an
instance of my class "Cell"). I am not sure whether it is necessary
or desirable to use the '&' and I've noticed that this subject seems
to be a source of considerable debate in this group (is this the
method used implicitly in java?).

My problem here is that the lines;

$html .= $newCell->getAttributes( );
$html .= $newCell->getData();

do not work. They refer to functions within the Cell class but the
error that comes up is;

Fatal error: Call to a member function on a non-object


function addCell(&$myCel l)
{
$html="<td>";
$html .= $newCell->getAttributes( );
$html .= $newCell->getData();

return $html .= "</td>";
}


If it should help in identifying the problem, the remainder of this
class is printed below. Thanks for your help ;-)

Andy

--------------------------------------------------------------------------
//test data
$testTable = new Table('border=" 1" summary="Test table"');
$c1 = new Cell("skdj", "bgsdlr");
$c2 = new Cell('jzhb', 'sjbvf');
$c3 = new Cell('zjskdbv', 'jsdbsjkv');
$c4 = new Cell('jzsdcg', 'zkdjbd');
$r1 = array($c1, $c2);
$r2 = array($c3, $c4);
$testTable->startTable() ;
$testTable->addRow($r1);
$testTable->addRow($r2);
$testTable->stopTable();

//Table Class
class Table
{
var $attributes;


function Table($attribut es="")
{
$this->attributes = $attributes;
}


function startTable()
{
echo $html = "<table " .$this->attributes . "\n";
}


function stopTable()
{
echo $html = "</table>";
}


function addRow($newRow)
{
$html="<tr>";
for( $i ; $i < count($newRow) ; $i++ )
{
$cells=$newRow[i];
$html .=$this->addCell($cells );
}
echo $html .="</tr>";
}
}
?>

[Pedro Graca]

Re: another argument passing problem :-(

Andy wrote:
(snip)[color=blue]
> Fatal error: Call to a member function on a non-object
>
>
> function addCell(&$myCel l)
> {
> $html="<td>";
> $html .= $newCell->getAttributes( );[/color]

Where does $newCell come from? :)
[color=blue]
> $html .= $newCell->getData();
>
> return $html .= "</td>";
> }[/color]

Turn on error reporting for PHP and it will tell you when you use
unintialized variables.

Insert

error_reporting (E_ALL);
ini_set('displa y_errors', '1');

at the top of your scripts (or change php.ini)



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[Chung Leong]

Re: another argument passing problem :-(

The solution is:

<table>
<tr>
<td>Pluralita s non est ponenda sine neccesitate</td>
</tr>
</table>

"Andy" <andyfaeglasgow @yahoo.co.uk> wrote in message
news:b252a1fa.0 404010737.11193 ad8@posting.goo gle.com...[color=blue]
> Hi all,
>
> Sorry to present you all with another boring problem but I've spent
> all day trying to get this to work with no success.
>
> Below is a function to which I pass the argument &$myCell (which is an
> instance of my class "Cell"). I am not sure whether it is necessary
> or desirable to use the '&' and I've noticed that this subject seems
> to be a source of considerable debate in this group (is this the
> method used implicitly in java?).
>
> My problem here is that the lines;
>
> $html .= $newCell->getAttributes( );
> $html .= $newCell->getData();
>
> do not work. They refer to functions within the Cell class but the
> error that comes up is;
>
> Fatal error: Call to a member function on a non-object
>
>
> function addCell(&$myCel l)
> {
> $html="<td>";
> $html .= $newCell->getAttributes( );
> $html .= $newCell->getData();
>
> return $html .= "</td>";
> }
>
>
> If it should help in identifying the problem, the remainder of this
> class is printed below. Thanks for your help ;-)
>
> Andy
>
> --------------------------------------------------------------------------
> //test data
> $testTable = new Table('border=" 1" summary="Test table"');
> $c1 = new Cell("skdj", "bgsdlr");
> $c2 = new Cell('jzhb', 'sjbvf');
> $c3 = new Cell('zjskdbv', 'jsdbsjkv');
> $c4 = new Cell('jzsdcg', 'zkdjbd');
> $r1 = array($c1, $c2);
> $r2 = array($c3, $c4);
> $testTable->startTable() ;
> $testTable->addRow($r1);
> $testTable->addRow($r2);
> $testTable->stopTable();
>
> //Table Class
> class Table
> {
> var $attributes;
>
>
> function Table($attribut es="")
> {
> $this->attributes = $attributes;
> }
>
>
> function startTable()
> {
> echo $html = "<table " .$this->attributes . "\n";
> }
>
>
> function stopTable()
> {
> echo $html = "</table>";
> }
>
>
> function addRow($newRow)
> {
> $html="<tr>";
> for( $i ; $i < count($newRow) ; $i++ )
> {
> $cells=$newRow[i];
> $html .=$this->addCell($cells );
> }
> echo $html .="</tr>";
> }
> }
> ?>[/color]