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<?php $fruitpacks = [ ['apples', 3], ['pears', 1], ['apples', 6], ['grapes', 22], ]; abstract class ⁇ { public static function ➕＝(&$maybeDefined, int $value) { $maybeDefined = ($maybeDefined ?? 0) + $value; } } $totals_by_name = []; foreach ($fruitpacks as [$name, $amount]) { ⁇::➕＝($totals_by_name[$name], $amount); } var_dump($totals_by_name);
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["apples"]=> int(9) ["pears"]=> int(1) ["grapes"]=> int(22) }

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