3v4l.org

run code in 150+ php & hhvm versions
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<?php $arr=array("1","2","3","4"); printf($arr); ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Array to string conversion in /in/Makd3 on line 3 Array