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<?php $attributes = ['Type' => 'MyType']; $payload = "Frankfurt"; var_dump(['one'=>'two']+['one'=>'three']); $jobMessage = [ 'MessageBody' => json_encode($payload), 'MessageAttributes' => array_merge([ "Type" => [ 'StringValue' => __CLASS__, 'DataType' => 'String' ] ], array_values(array_map( function($name, $value) { return [ "$name" => [ 'DataType' => 'String', 'StringValue' => $value, ] ]; }, array_keys($attributes), array_values($attributes) )) ) ]; var_dump($jobMessage);

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