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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "1234567890a"; var_dump($a["010"], isset($a["010"])); isset($a["10"]);// true
based on O65JA
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.3.0rc3
string(1) "a" bool(true)
Output for hhvm-3.15.4
string(1) "a" bool(false)