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<?php class call{ public function objectiveCall($month,$year,$state){ return ["filters"=>[["field" => "mes", "value" => $month, "oper" => "equals"], ["field" => "anho", "value" => $year, "oper" => "equals"], ["field" => "state", "value" => $state, "oper" => "equals"]]]; } } var_dump(json_encode((new call())->objectiveCall(2,3,4)));
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(142) "{"filters":[{"field":"mes","value":2,"oper":"equals"},{"field":"anho","value":3,"oper":"equals"},{"field":"state","value":4,"oper":"equals"}]}"

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