Online PHP editor | refs for 6ae1o

<?php $arr = [ 1 => ['A' => '1', 'B' => 1, 'C' => 'TEMU3076746'], 2 => ['A' => '2', 'B' => 1.3, 'C' => 'FCIU5412720'], 3 => ['A' => '3', 'B' => 1.5, 'C' => 'TEMU3076746'], 4 => ['A' => '4', 'B' => 1.8, 'C' => 'TEMU3076746'], 5 => ['A' => '5', 'B' => 2, 'C' => 'FCIU5412720'] ]; var_export(array_column($arr, 'B', 'B')); echo "\n---\n"; var_export(array_count_values(array_column($arr, 'B'))); echo "\n---\n"; var_export(array_unique(array_column($arr, 'B')));