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<?php $values = [4, 6, 3]; var_export( array_map( fn($k) => "$k: " . $values[$k] * 2, array_keys($values) ) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => '0: 8', 1 => '1: 12', 2 => '2: 6', )

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