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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "1234567890a"; var_dump($a["010"], isset($a["010"])); isset("10");// true
based on Q7s62
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.1.6
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/O65JA on line 4
Process exited with code 255.
Output for hhvm-3.15.4
string(1) "a" bool(false)