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<?php $array = [ ['user' => 'Name 1', 'group' => 1], ['user' => 'Name 2', 'group' => 1], ['user' => 'Name 3', 'group' => 2], ['user' => 'Name 4', 'group' => 2], ['user' => 'Name 5', 'group' => 3], ]; var_export( array_count_values(array_column($array, 'group')) );
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 1 => 2, 2 => 2, 3 => 1, )
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90.96 ms | 1379 KiB | 4 Q