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<?php for ($i = -1; $i < 2; $i++) { for ($j = -1; $j < 2; $j++) { echo sprintf("%2d <=> %2d: %2d" . PHP_EOL, $i, $j, $i <=> $j); } }
Output for git.master, git.master_jit, rfc.property-hooks
-1 <=> -1: 0 -1 <=> 0: -1 -1 <=> 1: -1 0 <=> -1: 1 0 <=> 0: 0 0 <=> 1: -1 1 <=> -1: 1 1 <=> 0: 1 1 <=> 1: 0

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