3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $QuestionTypeSelector = 'AddingFractions'; $id = 4; echo "UPDATE answers SET '{$QuestionTypeSelector}Score' = '2' WHERE user_id=$id";
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
UPDATE answers SET 'AddingFractionsScore' = '2' WHERE user_id=4