[tssg-tech] Re: PHP help needed
- From: Ken Haduch <khaduch@xxxxxxxxx>
- To: tssg-tech@xxxxxxxxxxxxx
- Date: Mon, 2 Jul 2012 06:47:30 -0400
Hello -
You probably have your solution - adding the "$this->" is the key, which
Mary-Anne Wolf put in her code.
I am a PHP novice, but that is a standard OO construct that I didn't think
of when looking at this initially. There is one line in her code that
doesn't work, it is a diagnostic output line in the "get" function: echo
"value=$values[$key]";
As I was experimenting / learning with this, I came up with this code, and
found the function 'var_dump' that was another interesting diagnostic tool.
My final code was this:
<?php
class myObj
{
private $values = array();
function __construct() {
$this->values['ONE']=1;
$this->values['TWO']=2;
$this->values['THREE']=3;
$this->values['FOUR']=4;
foreach ($this->values as $key => $value)
echo $key.'=>'.$value.'<br />';
//var_dump($this->values);
echo '<br>';
echo 'var_dump of the newly constructed object within the constructor:<br>';
var_dump($this);
echo '<br>';
}
//Return key value if assigned, else return not assigned
public function get($key) {
echo "myObj get fxn: key=$key".'<br>';
// var_dump ($this);
if (isset($this->values[$key]))
echo "<br>value=".$this->values[$key]."<br>";
if ( isset($this->values[$key])){
return $this->values[$key];
}
return 'Not assigned!';
}
}
echo 'Creating a new myObj at line 32<br>';
$var = new myObj;
echo "var_dump of the newly created object:<br>";
var_dump($var); echo '<br>';
echo '<br><br>';
echo 'The value is: '.$var->get('FOUR');
?>
Although the cut-and-paste wreaked a little havoc with it. The output that
I get in the browser when I run this:
Creating a new myObj at line 32
ONE=>1
TWO=>2
THREE=>3
FOUR=>4
var_dump of the newly constructed object within the constructor:
object(myObj)#1 (1) { ["values":"myObj":private]=> array(4) { ["ONE"]=>
int(1) ["TWO"]=> int(2) ["THREE"]=> int(3) ["FOUR"]=> int(4) } }
var_dump of the newly created object:
object(myObj)#1 (1) { ["values":"myObj":private]=> array(4) { ["ONE"]=>
int(1) ["TWO"]=> int(2) ["THREE"]=> int(3) ["FOUR"]=> int(4) } }
myObj get fxn: key=FOUR
value=4
The value is: 4
-- Ken
On Sun, Jul 1, 2012 at 10:31 AM, Play Cool Games <play@xxxxxxxxxxxxx> wrote:
> Or upon further examination !
> But not sure how to rewrite as I didn't understand the $key purpose in the
> original !
>
>
> Warning
> Reference of a $value and the last array element remain even after the
> foreach loop.
> It is recommended to destroy it by unset().
>
> Reference:
> http://php.net/manual/en/control-structures.foreach.php
>
> unset($value); // break the reference with the last element
>
> On Jun 30, 2012, at 9:17 PM, Brian Marple wrote:
>
> > What is wrong with this code? It is as simple as all get out yet it
> doesn't work!!! Does anyone have any clues?
> >
> >
> > <?php
> >
> > class myObj
> > {
> > private $values = array();
> >
> > public function __construct() {
> > $values['ONE']=1;
> > $values['TWO']=2;
> > $values['THREE']=3;
> >
> > foreach ($values as $key => $value)
> > echo $key.'=>'.$value.'<br />';
> > }
> >
> > //Return key value if assigned, else return not assigned
> > public function get($key) {
> > if (isset($values[$key])){
> > return $values[$key];
> > }
> > return 'Not assigned!';
> > }
> >
> > }
> >
> > $var = new myObj;
> > echo 'The value is: '.$var->get('ONE');
> >
> > ?>
> >
> > --
> > Brian Marple
> > Systems Analyst
> >
> >
> >
> >
>
> Lee T. Davy - Mini
> Play Cool Games
> play@xxxxxxxxxxxxx
>
>
>
>
>
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