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Posted by gg9h0st on 10/11/33 11:47
i'm a newbie studying php.
i was into array part on tutorial and it says
i'll get an array having keys that from member variable's name
by converting an object to array.
i guessed "i can get public members but not protected, private, static
members"
(just like i got error if i try to access protected, private members
outside of object)
then i wrote a simple code to see how's it going.
################## code #######################
<?php
// for testing, each member of public, protected, private, static
CLASS test {
public $a = 'a';
protected $b = 'b';
private $c = 'c';
static $d = 'd';
}
//converting an object to array
$a = (array)new test();
var_dump($a);
echo '<br>';
/*let's see how it works (it threw not static member cuz it's not in
the object as i guessed. but it prints all other members including
public, protected, private eventhough i called this func outside of
object)*/
//i wanted to try to access by another way and it works too.
foreach($a as $i => $j)
echo "\$a : '$i' => '$j'<br>\n";
//i tryed to access by the key i saw on result. but it doesn't work at
all.
echo $a[' test c'] . "<br>\n";
?>
################## output #######################
array(3) {
["a"]=>
string(1) "a"
[" * b"]=>
string(1) "b"
[" test c"]=>
string(1) "c"
}
<br>$a : 'a' => 'a'<br>
$a : ' * b' => 'b'<br>
$a : ' test c' => 'c'<br>
<br>
#################################################
if i try to access protected, private members directly outside of the
object, i'll get an error.
but by convering the object to array, i can get all member variables.
is it right way? then what about the visibility. i think i can be a
problem.
Is it right way to access object members?(by converting to
array)<<----------------------------- Q1.
anyway i tried to access by typing the key i saw on output ' * b' , '
test c', it didn't work.
while with the key variables i got from 'foreach', it worked.
i think i made a mistake on making the keys.
so
Can anyone explain me what's the problem on accessing by key i
typed?<<------------------Q2.
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