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run code in 200+ php & hhvm versions
Bugs & Features
<?php $values = array('1','2'); var_dump(!count(array_filter($values, 'is_array'))); var_dump(isset($values[0]), $values[0]); var_dump(isset($values[0][0]), $values[0][0]);
Output for 4.3.0 - 7.2.0
bool(true) bool(true) string(1) "1" bool(true) string(1) "1"