More on array references
<?php
function test(&$a) {}
test($x['foo']);
?>Don't ask me, ever, why this doesn't throw a notice or two. It creates the $x array with a foo key assigned to NULL.
Don't ask me, ever, why this doesn't throw a notice or two. It creates the $x array with a foo key assigned to NULL.
Comments
PHP is a loosely typed
PHP is a loosely typed language, that's why. It creates the $x array because it declares vars on the fly. Same with the foo key. Desired action.
?
$x['foo']is accessed, not assigned in this case.$x['foo'] = 'bar'would be an assignment.Accessing the undefined
$x['foo']should throw a PHP notice. The WTF is that PHP does not throw a notice, but silently declares$x['foo']as NULL.This is news? ;)
I've seen other people rely on this behavior and do it myself, too.
See lines 13 & 15 @ http://drupalcode.org/project/entity.git/blob/refs/heads/7.x-1.x:/module...
Among many others.
That's somewhat different
http://www.phpwtf.org/array-reference-always-succeeds
It's not different...
That's the exact same behavior.
A good counter question I can ask you is, how do you expect PHP to handle a 'NULL' reference without either throwing a fatal error right away, or segfaulting on assignment?
Seems like they made the right decision (IMO).
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