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run code in 150+ php & hhvm versions
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<?php $arr = Array ( 0 => Array ( 0 => 'Red', 1 => 'Steel' ), 1 => Array ( 0 => 'Red', 1 => 'Wood' ) , 2 => Array ( 0 => 'Blue', 1 => 'Wood' ) ); $colors = array_count_values(array_column($arr, 0)); $materials = array_count_values(array_column($arr, 1)); echo "Colors:\n"; foreach($colors as $color => $count){ echo $color . '=>' . $count . "\n"; } echo "Materials:\n"; foreach($materials as $material => $count){ echo $material . '=>' . $count . "\n"; }
based on 56ti7
Output for 5.5.24 - 7.1.0
Colors: Red=>2 Blue=>1 Materials: Steel=>1 Wood=>2
Output for 5.0.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/FpeXj on line 7
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_column() in /in/FpeXj on line 7
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: array_column() in /in/FpeXj on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_column() in /in/FpeXj on line 7