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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(count(NULL));
Output for 7.2.0 - 7.3.1
Warning: count(): Parameter must be an array or an object that implements Countable in /in/qTkKW on line 2 int(0)
Output for 4.3.0 - 7.1.25
int(0)