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<?php $arClinics = [ [ 'ID' => 10882, '~ID' => 10882, 'PROPERTY_SPECIALIZATIONS_VALUE' => [], '~PROPERTY_SPECIALIZATIONS_VALUE' => [], 'PROPERTY_SPECIALIZATIONS_DESCRIPTION' => [], '~PROPERTY_SPECIALIZATIONS_DESCRIPTION' => [], 'PROPERTY_SPECIALIZATIONS_PROPERTY_VALUE_ID' => [], '~PROPERTY_SPECIALIZATIONS_PROPERTY_VALUE_ID' => [], ], [ 'ID' => 10883, '~ID' => 10883, 'PROPERTY_SPECIALIZATIONS_VALUE' => [], '~PROPERTY_SPECIALIZATIONS_VALUE' => [], 'PROPERTY_SPECIALIZATIONS_DESCRIPTION' => [], '~PROPERTY_SPECIALIZATIONS_DESCRIPTION' => [], 'PROPERTY_SPECIALIZATIONS_PROPERTY_VALUE_ID' => [], '~PROPERTY_SPECIALIZATIONS_PROPERTY_VALUE_ID' => [], ], [ 'ID' => 10884, '~ID' => 10884, 'PROPERTY_SPECIALIZATIONS_VALUE' => [ 11281, 11254, 10885, 10895, 10887, 10886, 10888, 21736 ], '~PROPERTY_SPECIALIZATIONS_VALUE' => [ 11281, 11254, 10885, 10895, 10887, 10886, 10888, 21736 ], 'PROPERTY_SPECIALIZATIONS_DESCRIPTION' => [], '~PROPERTY_SPECIALIZATIONS_DESCRIPTION' => [], 'PROPERTY_SPECIALIZATIONS_PROPERTY_VALUE_ID' => [], '~PROPERTY_SPECIALIZATIONS_PROPERTY_VALUE_ID' => [], ] ]; foreach($arClinics as $id => $Clinic) { $arClinics[$id] = array_filter( $Clinic, function($key) { return $key == 'ID' || $key == 'PROPERTY_SPECIALIZATIONS_VALUE'; }, ARRAY_FILTER_USE_KEY ); } print_r($arClinics);