3v4l.org

run code in 200+ php & hhvm versions
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<?php echo urldecode("score%5B0%5D%5Bscore%5D=300&score%5B0%5D%5Blevel%5D=1");
Output for 4.3.0 - 7.2.0
score[0][score]=300&score[0][level]=1