Hi,
I've encountered a hard-to-consistently-reproduce issue with HashTable
zvals. I have code that will generate big nested \stdClass structures for
JSON encoding. It does so using classes that have methods that generate
those fields. For example, you could have a class like this:
class Block {
public function css_classes() {
return ['x', 'y', 'z'];
}
}
Other code would translate it into a value that would var_dump() as this:
object(stdClass)#1 (1) {
["css_classes"]=>
array(3) {
[0]=>
string(1) "x"
[1]=>
string(1) "y"
[2]=>
string(1) "z"
}
}
The template data could include multiple instances of Block. As in, a
\stdClass could be generated with multiple copies of that array content.
That data could get sent to json_encode(), which
uses ZEND_HASH_APPLY_PROTECTION/etc. to avoid recursion. I've seen
situations where that array of strings triggers that recursion check. But
it's not always, and a php-fpm restart can make it go away.
Can anyone think of why this might happen?
Thanks,
Adam
