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run code in 200+ php & hhvm versions
Bugs & Features
<?php $test ='key'; $bla['bla']['bleh'][$test] = 2; print_r($bla);
based on MNQtl
Output for 4.3.0 - 7.2.0
Array ( [bla] => Array ( [bleh] => Array ( [key] => 2 ) ) )