Hi, On Mon, Aug 22, 2011 at 08:22, Mads Lie Jensen <m...@gartneriet.dk> wrote: > On Mon, 22 Aug 2011 08:10:28 +0200, ka...@php.net (Kalle Sommer Nielsen) > wrote: > >>> After upgrading to php 5.3.7, whenever I use is_a($object, 'ClassName'); >>> the autoloader of classes is now called. >>> >>> This did not happen in earlier versions of php 5.3 that I used before. >>> But I cannot find any mention of it anywhere, no open bugs for it, and >>> nothing in the changelogs. >>> >>> Is it a bug or is it intentional that it has started behaving this way? >> >>I'm unable to reproduce your case in 5.3.4RC1, 5.3.7 and 5.3-svn: >>http://pastie.org/2410070 > > Ah, I now see that it only happens when trying to check something which > is not actually an object: > > <?php > > function __autoload($class) { > echo "Would load: " . $class . PHP_EOL; > } > > $var = "test"; > var_dump(is_a($var, 'B')); > > $obj = new Stdclass; > var_dump(is_a($obj, 'C')); > > ?> > > But still, it did not happen in earlier phpversions. Here is the situation:
1) The underlying implementation is shared between is_a and is_subclass_of. 2) Previously, strings as first argument was not permitted by is_a but was for is_subclass_of, 3) is_subclass_of always triggered autoload in such cases. 4) Following a fix from Dmitry, the underlying implementation now allows a string as first argument for is_a as well. Conclusion: it is now consistent, but if you wrongly used is_a with a string before, it now triggers autoload because it actually accepts it. Best, > -- > Mads Lie Jensen - m...@gartneriet.dk - ICQ #25478403 > Gartneriet - http://www.gartneriet.dk/ > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > > -- Etienne Kneuss http://www.colder.ch -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
