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<?php $a = array( array( 'week' => 26, '#orders_CA' => 0, 'cost_CA' => 0, '#orders_US' => 3, 'cost_US' => 18.99, '#orders_INTERNATIONAL' => 0, 'cost_INTERNATIONAL' => 0 ), array( 'week' => 26, '#orders_CA' => 0, 'cost_CA' => 0, '#orders_US' => 0, 'cost_US' => 0, '#orders_INTERNATIONAL' => 22, 'cost_INTERNATIONAL' => 32 ), ); array_reduce($a, 'array_merge', $a);

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