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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') { var_dump('success1'); } if ('none2' !== 'none') { var_dump('success2'); }
based on UfciR
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) bool(true) string(8) "success2"