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<?php function getRunningTotal(array $array) { $generator = function(array $array) { $total = 0; foreach ($array as $key => $value) { $total += $value; yield $key => $total; } }; return iterator_to_array($generator($array)); } $a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; var_dump(getRunningTotal($a));
Output for git.master, git.master_jit, rfc.property-hooks
array(10) { [0]=> int(1) [1]=> int(3) [2]=> int(6) [3]=> int(10) [4]=> int(15) [5]=> int(21) [6]=> int(28) [7]=> int(36) [8]=> int(45) [9]=> int(55) }

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