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<?php function hasort($arr) { $a = $b = array(); foreach($arr as $v => $k) $a[$k][] = $v; ksort($a); foreach($a as $v => $i) foreach($i as $k) $b[$k] = $v; return $b; } $a = array('d' => 10, 'z' => 10, 'c' => 10, 'b' => 11, 'a' => 10); $a = hasort($a); print_r($a);

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94.69 ms | 402 KiB | 5 Q