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<?php $a = array('a' => 10, 'z' => 10, 'c' => 10, 'b' => 11, 'd' => 10); $b = array(); foreach($a as $k => $v) $b[$v][] = $k; ksort($b); $a = array(); foreach($b as $k => $v) { foreach($v as $i) $a[$i] = $k; } var_dump($a);
Output for git.master, git.master_jit, rfc.property-hooks
array(5) { ["a"]=> int(10) ["z"]=> int(10) ["c"]=> int(10) ["d"]=> int(10) ["b"]=> int(11) }

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