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<?php function cmp($a, $b) { if ($a == $b) { return 0; } echo "a".$a."b".$b."\n"; return ($a > $b) ? -1 : 1; } $a = array(3, 2, 5, 6, 1); usort($a, "cmp"); foreach ($a as $key => $value) { echo "$key: $value\n"; } $b = $a; sort($b); echo "B:\n"; foreach ($a as $key => $value) { echo "$key: $value\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
a3b2 a2b5 a3b5 a2b6 a3b6 a5b6 a2b1 0: 6 1: 5 2: 3 3: 2 4: 1 B: 0: 6 1: 5 2: 3 3: 2 4: 1

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