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run code in 200+ php & hhvm versions
Bugs & Features
<?php $expected_array_got_string = 'helloworld'; var_dump(isset($expected_array_got_string['und'][0]));
Output for 7.0.0 - 7.2.0
bool(false)
Output for 5.5.0 - 5.6.28
bool(true)