Posted by laredotornado@zipmail.com on 03/01/07 21:42

On Mar 1, 11:58 am, "Steve" <no....@example.com> wrote:
> <laredotorn...@zipmail.com> wrote in message
>
> news:1172770679.377598.207250@z35g2000cwz.googlegroups.com...
> | On Mar 1, 11:28 am, "Steve" <no....@example.com> wrote:| > <laredotorn...@zipmail.com> wrote in message
>
> | >
> | >news:1172766345.255553.20170@v33g2000cwv.googlegroups.com...
> | > | Hi,
> | > |
> | > | Using PHP 4.4.4, and I have this class
> | > |
> | > | class CUserItem {
> | > | var $m_id;
> | > | var $m_children_arr;
> | > | function CUserItem($p_id)
> | > | {
> | > | $this->m_id = $p_id;
> | > | $this->m_children_arr = array();
> | > | } // CUserItem
> | > | function addChild($p_child) {
> | > | array_push($this->m_children_arr, $p_child);
> | > | } // addChild
> | > | function numChildren() {
> | > | return count($this->m_children_arr);
> | > | } // numChildren
> | > | } // CUserItem
> | > |
> | > | I have an associative array of objects, but am getting errors trying
> | > | to call a method
> | > |
> | > | $items_arr = array();
> | > | $items_arr[0] = new CUserItem(1);
> | > | $item = &$items_arr[0];
> | > | print $item->numChildren(); // produces an error
> | > |
> | > | The error produced is "Fatal error: Call to a member function on a
> non-
> | > | object in /usr/local/apache2/htdocs/portal/show_toc.inc on line 77".
> | > | I need to get the object by reference because I will be manipulating
> | > | it later on. What am I doing wrong above?
> | >
> | > print_r on $items_arr[0], then print_r on $item after it is set by ref
> to
> | > $items_arr[0]. finally print_r on $item after $item is set to
> $items_arr[0]
> | > by value. therein lies the difference.
> |
> |
> | Thanks for your reply but I don't understand what you are asking me to
> | do. Could you provide a code sample? I want "$item" to contain a
> | reference ot the created object (as opposed a new copy) but I would
> | then like to call a method from the object being referenced.
>
> $items_arr = array();
> $items_arr[0] = new CUserItem(1);
> $itemTestA = &$items_arr[0];
> $itemTestB = $items_arr[0];
> $test = array(
> 'RAW DATA' => $items_arr ,
> 'BY REF' => $itemTestA ,
> 'BY VAL' => $itemTestB
> );
> print_r($test);
>
> see what the differences are. does that help?

Thanks again but I can't see any difference when I print out the
array. Here's my code

print "*****************<BR>\n";
$item1 = new CUserTOCItem(7,
"",
"ROOT",
0,
0,
1,
0);
$item2 = new CUserTOCItem(4,
"",
"Chapter 1",
0,
0,
1,
0);
$a = array();
$a[7] = &$item1;
$a[4] = $item2;
print_r($a) . "<BR>\n";
print "*****************<BR>\n";

and the output

Array ( [7] => cusertocitem Object ( [m_id] => 7 [m_parent] =>
[m_title] => ROOT [m_depth] => 0 [m_hidden] => 0 [m_open] => 1
[m_order_id] => 0 [m_children_arr] => Array ( ) ) [4] => cusertocitem
Object ( [m_id] => 4 [m_parent] => [m_title] => Chapter 1 [m_depth] =>
0 [m_hidden] => 0 [m_open] => 1 [m_order_id] => 0 [m_children_arr] =>
Array ( ) ) )

- Dave

[Back to original message]