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<?php $a = []; $a['R3']['C3'] = 66; $a['R1']['C1'] = 123; $a['R2']['C2'] = 423523; $a['R1']['C2'] = 3; arsort($a); print_r ($a);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [R1] => Array ( [C1] => 123 [C2] => 3 ) [R3] => Array ( [C3] => 66 ) [R2] => Array ( [C2] => 423523 ) )

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