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<?php $array = [ [['value' => 1100], ['value' => 1000], ['value' => 3000]], [['value' => 1200], ['value' => 2000], ['value' => 2000]], [['value' => 1300], ['value' => 4000], ['value' => 1000]], ]; var_export( array_map(fn(...$col) => $col, ...$array) // to demonstrate transposition ); echo "\n---\n"; var_export( array_map( fn(...$col) => array_sum(array_column($col, 'value')), ...$array ) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => array ( 0 => array ( 'value' => 1100, ), 1 => array ( 'value' => 1200, ), 2 => array ( 'value' => 1300, ), ), 1 => array ( 0 => array ( 'value' => 1000, ), 1 => array ( 'value' => 2000, ), 2 => array ( 'value' => 4000, ), ), 2 => array ( 0 => array ( 'value' => 3000, ), 1 => array ( 'value' => 2000, ), 2 => array ( 'value' => 1000, ), ), ) --- array ( 0 => 3600, 1 => 7000, 2 => 6000, )

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