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<?php var_dump(array_map('trim', explode(',', 'Pizza, Salad, Burger'))); var_dump(array_map(trim(...), explode(',', 'Pizza, Salad, Burger')));
Output for git.master, git.master_jit
array(3) { [0]=> string(5) "Pizza" [1]=> string(5) "Salad" [2]=> string(6) "Burger" } array(3) { [0]=> string(5) "Pizza" [1]=> string(5) "Salad" [2]=> string(6) "Burger" }

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