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run code in 200+ php & hhvm versions
Bugs & Features
<?php function &a($b){ return $b; } $c = a(10); a(20); echo $c; var_dump($c);
based on iMIEk
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0beta1
10int(10)