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<?php function pulverize($rock){ $powder = $rock; while($powder>5){ $powder = array_sum(str_split($powder)); } return $powder; } echo pulverize(05071983); ?>
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29, 5.5.0 - 5.5.13

Process exited with code 137.
preferences:
201.06 ms | 1395 KiB | 80 Q