JSON-规范内部的de格式

您可以尝试以下代码,但尚未测试:

$json   =   '{"title":"acastro","description":"teste acastro 4","category_id":29,"region_id":3,"city_id":3158063,"district_id":"1","contact":{"person":"Classe Car"},"0":{"make":"Mercedes-Benz"},"1":{"model":"GLC 220"},"2":{"engine_code":"Classe A"}}';

    $newArr     =   array();
function recursiveArrayShiftToRoot($array, &$newArr=array()){
    global $newArr ;
    foreach($array as $index=>$eachMixVal){
        if(is_array($eachMixVal)){
            recursiveArrayShiftToRoot($eachMixVal);
        }else{
            $newArr[$index] =   $eachMixVal;
        }
    }
}
recursiveArrayShiftToRoot(json_decode($json, true), $newArr);