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<?php $array = [ ['Rank' => 7, 'Suit' => 'Hearts'], ['Rank' => 3, 'Suit' => 'Hearts'], ['Rank' => 6, 'Suit' => 'Spades'], ['Rank' => 10, 'Suit' => 'Spades'], ['Rank' => 3, 'Suit' => 'Spades'], ['Rank' => 6, 'Suit' => 'Hearts'], ['Rank' => 2, 'Suit' => 'Clubs'], ]; $rankCounts = array_count_values(array_column($array, 'Rank')); usort( $array, function($a, $b) use ($rankCounts) { return [$rankCounts[$b['Rank']], $b['Rank']] <=> [$rankCounts[$a['Rank']], $a['Rank']]; } ); var_export($array);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => array ( 'Rank' => 6, 'Suit' => 'Spades', ), 1 => array ( 'Rank' => 6, 'Suit' => 'Hearts', ), 2 => array ( 'Rank' => 3, 'Suit' => 'Hearts', ), 3 => array ( 'Rank' => 3, 'Suit' => 'Spades', ), 4 => array ( 'Rank' => 10, 'Suit' => 'Spades', ), 5 => array ( 'Rank' => 7, 'Suit' => 'Hearts', ), 6 => array ( 'Rank' => 2, 'Suit' => 'Clubs', ), )

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