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run code in 150+ php & hhvm versions
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<?php var_dump( ! 'none' !== 'none'); var_dump( ! 'none2' !== 'none'); if ( ! 'none' !== 'none') { echo 'success'; }
based on ePa6a
Output for 4.3.0 - 7.1.0
bool(true) bool(true) success