Finite Hate Machine

Been a while. Have a simple one – what does this print?

$arr[null] = "Null string";
$arr[false] = "False string";
$arr[0] = "Zero string";
 
print_r($arr);

It’s…

Array ( [] => Null string [0] => Zero string )

Surprise!

It gets better:

$arr[null] = "Null string";
$arr[false] = "False string";
$arr[0] = "Zero string";
$arr[''] = "Empty string string";

gives

Array ( [] => Empty string string [0] => Zero string )

Hat tip to Will for this one.

This entry was posted on Friday, December 17th, 2010 at 10:59 am and is filed under Language Design, Ugly Implementation. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.