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run code in 150+ php & hhvm versions
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<?php $heading_level = 'dsfhsdjfhdjshfjsdhfjdshfjshdfjhds 0'; $heading_level++; $heading_level++; echo $heading_level;
Output for 4.3.0 - 7.1.0
dsfhsdjfhdjshfjsdhfjdshfjshdfjhds 2