Associative Array In Class

[corey]

In PHP Version 4.3.6 I am trying get a value from a class member that
is an associative array...

class MyClass
{
$var row;

function MyClass()
{
$this->$row = array("A"=>"Apple", "B"=>"Bob");

echo "One: " . $this->$row["A"] . "<br>";
echo "Two: " . $this->row["A"] . "<br>";

$cache = $this->$row;
echo "Three: " . $cache ["A"] . "<br>";
}
}

But this is the output...

One: Array
Two:
Three: Apple

How can I get at the value of the associative array without making a
local copy first!

Corey

[neur0maniak]

corey wrote:

In PHP Version 4.3.6 I am trying get a value from a class member that
is an associative array...

class MyClass
{
$var row;

function MyClass()
{
$this->$row = array("A"=>"Apple", "B"=>"Bob");

echo "One: " . $this->$row["A"] . "<br>";
echo "Two: " . $this->row["A"] . "<br>";

$cache = $this->$row;
echo "Three: " . $cache ["A"] . "<br>";
}
}

But this is the output...

One: Array
Two:
Three: Apple

How can I get at the value of the associative array without making a
local copy first!

Corey

Don't use a $ after the -> symbol

Try this:
class MyClass
{
$var row;

function MyClass()
{
$this->row = array("A"=>"Apple", "B"=>"Bob");

echo "One: " . $this->row["A"] . "<br>";
echo "Two: " . $this->row["A"] . "<br>";

$cache = $this->row;
echo "Three: " . $cache ["A"] . "<br>";
}
}

[corey]

I tried that in the original example... It is what is output after
"Two:" but that ouputs nothing if you look at the output in my first
post.

Corey

corey wrote:

In PHP Version 4.3.6 I am trying get a value from a class member that
is an associative array...

class MyClass
{
$var row;

function MyClass()
{
$this->$row = array("A"=>"Apple", "B"=>"Bob");

echo "One: " . $this->$row["A"] . "<br>";
echo "Two: " . $this->row["A"] . "<br>";

$cache = $this->$row;
echo "Three: " . $cache ["A"] . "<br>";
}
}

But this is the output...

One: Array
Two:
Three: Apple

How can I get at the value of the associative array without making a
local copy first!

Corey

Don't use a $ after the -> symbol

Try this:
class MyClass
{
$var row;

function MyClass()
{
$this->row = array("A"=>"Apple", "B"=>"Bob");

echo "One: " . $this->row["A"] . "<br>";
echo "Two: " . $this->row["A"] . "<br>";

$cache = $this->row;
echo "Three: " . $cache ["A"] . "<br>";
}
}

[Anders K. Madsen]

On 18 Jul 2004 15:20:32 -0700
co**************@yahoo.com (corey) wrote:

I tried that in the original example... It is what is output after
"Two:" but that ouputs nothing if you look at the output in my first
post.

I think he meant here:

$this->$row = array("A"=>"Apple", "B"=>"Bob");

It should be $this->row = array("A" => "Apple", "B" => "Bob");
The other evaluates to $this->"" since $row is empty.

--
Anders K. Madsen --- http://lillesvin.linux.dk

"There are 10 types of people in the world.
Those who understand binary - and those who don't."

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[Michael Fesser]

.oO(corey)

In PHP Version 4.3.6 I am trying get a value from a class member that
is an associative array...

class MyClass
{
$var row;
var $row;
function MyClass()
{
$this->$row = array("A"=>"Apple", "B"=>"Bob");
The line above creates a new unnamed (name is probably an empty string)
property in your object ($row is not initialized => NULL) and assigns
the array to it.

Set error_reporting to E_ALL and you'll see a notice on that.
echo "One: " . $this->$row["A"] . "<br>";
echo "Two: " . $this->row["A"] . "<br>";

The first of the lines above accesses this "anonymous" property and
outputs the first element, the second accesses the real and previously
declared property, which is still empty.

In fact

$this->row

and

$this->$row

are completly different things. The first directly accesses a property
named 'row', the second accesses a property, whose name is stored in the
variable $row.

HTH
Micha