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<?php $input=' { "label_values":[ "OK1","OK2","OK3" ] }'; $obj = json_decode($input); $results = $obj->{'label_values'}; $result = array_combine( $results, $results ); print_r( $result );
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
Array ( [OK1] => OK1 [OK2] => OK2 [OK3] => OK3 )

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