Null values are still values
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@ -46,7 +46,8 @@ function run_callbacks(array $callbacks, array $params)
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function has_value(array $data, Field $field)
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{
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return isset($data[$field->getLocation()][$field->getName()]);
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return array_key_exists($location = $field->getLocation(), $data)
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&& array_key_exists($field->getName(), $data[$location]);
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}
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function get_value(array $data, Field $field)
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