Hi Andre,
You could've just tried it yourself;)
$list = array(
'a'=>'string key',
utf8_encode('รค')=>'unicode key', //will be treated as an ascii-string
10=>'int key',
2.2=>'float key', //will be cast to an int(2)
null=>'null key', //will be cast to a string(0) ""
true=>'boolean key', //will be cast to an int(1)
);
class B { }
$f = fopen('/tmp/x','r');
$list[$f] = 'resource key'; //$f will be cast as an int(x)
$list[new B()] = 'object key'; //yields an "illegal offset type" notice
foreach( $list as $key => $value ) {
echo $value .': ';
var_dump($key);
}
Am 31.07.2011 04:18, schrieb Andre:
Question to someone who's familiar with how arrays are implemented in PHP.
I've tried asking this on stackoverflow.com, but it looks like I need
to ask this one
to people familiar with PHP source.
PHP manual says that one should only use strings or integers as array keys.
Also I know that PHP doesn't speak unicode yet.
So - I was just wondering - when unicode characteres are used in
array key - does PHP strips them or affects them in any way?
or does iPHP simply treats keys as binary string, the end of the story?
Thank you!
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