ID: 20525
Updated by: jan@php.net
Reported By: bmichael@goldparrot.com
-Status: Open
+Status: Feedback
Bug Type: Variables related
Operating System: Windows 2000
PHP Version: 4.2.3
New Comment:
can you please submit a short script along with some explaination what
it does, what not and what it should do in your opinion. Also make sure
you have read http://www.php.net/manual/en/language.references.php
and notice that the & works slightly different than in C.
Previous Comments:
------------------------------------------------------------------------
[2002-11-20 17:55:08] bmichael@goldparrot.com
The variable reference is not working as I would understand it should.
The example that follows is long, but just cut and paste then read the
output.
Years of "C" programming says this should work.
Try example first then, look for the following lines in the
code:
//*****NOTE****JUST DELETE THE & symbol TO MAKE WORK
and remove the & symbol to see the correct output.
CODE STARTS HERE
**********************************************************
<?php
class A
{
var $name;
var $order;
}
class B
{
var $name;
var $list_array;
}
class C_LIST {
var $c_list;
function print_test($call,$cname)
{
// call: the variable you want to print_r
// cname: the label for your debugging output
echo $cname . ":<pre>";
print_r($call);
if ( is_array($call))
{
reset($call);
}
echo "</pre><hr>";
}
function test()
{
//new instantiated array in memory
$local_c_list = array();
//array indicies for
$i = 0;
$j = 0;
//array indicies for $x (see below)
$k = 0;
$x = array(0 => array(0 => "A_First", 1 => "B_First", 2 =>
1),
1 => array(0 => "A_First", 1 => "B_Second", 2 =>
2),
2 => array(0 => "A_First", 1 => "B_Third",2 => 3),
3 => array(0 => "A_Second",1 => "B_First",2 => 1),
4 => array(0 => "A_Second",1 => "B_Second",2 =>
2),
5 => array(0 => "A_Second",1 => "B_Third",2 => 3)
);
//loop through in array of x, e.g. x[0][$l]
for ($k = 0; $k < 6; $k = $k + 1)
{
$b_name = $x[$k][0];
$a_name = $x[$k][1];
$a_order = $x[$k][2];
if ((!isset($b)) || (!isset($b->name)) || ($b_name !=
$b->name))
{
//attach the A record to the main list
// starting on the second A record found
if (isset($b->name))
{
//set the local_list to the reference of b
//this avoids memory copies
//*****NOTE****JUST DELETE THE & symbol TO MAKE WORK
$local_c_list[$i] = &$b;
$i = $i + 1;
$j = 0;
}
$b = new B();
$b->name = $b_name;
$b->list_array = array();
$this->print_test($b,"An element");
} //end if no B exists or we are beginning another B
name
//Create new A record
$a = new A();
$a->name = $a_name;
$a->order = $a_order;
$this->print_test($a,"An item");
//Set $b->list_array[$a->order] = &$a -- the reference of
$a
//*****NOTE****JUST DELETE THE & symbol TO MAKE WORK
$b->list_array[$j] = &$a;
$j = $j + 1;
$this->print_test($b,"A list");
} //end for k loops
$this->c_list = $local_c_list;
return;
} //end test
} //end class
$the_list = new C_LIST();
$the_list->test();
$the_list->print_test($the_list,"Test");
?>
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--
Edit this bug report at http://bugs.php.net/?id=20525&edit=1