3v4l.org

run code in 150+ php & hhvm versions
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<?php $a = array(); $a[0] = 'abc'; $a['0'] = 'def'; var_dump($a[0] === $a['0']);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true)