json_encode无法在生产服务器

Question

我在这里查了几篇文章，但没有一篇能为我效劳。 我有一个json_encode函数接收一个在localhost上工作得很好但在生产Web服务器上没有工作的数组。

嗯，php版本是5.6.17并启用了JSON扩展。 我尝试使用这个数组并且运行良好：

$arr = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5);
echo json_encode($arr);

这是无法工作的数组：我得到的只是一个空字符串，数组是使用PDO获取的数据构建的，后来是array_merge和array_merge_recursively函数。

Array
(
    [id] => 32
    [numero] => 469
    [complemento] => Bloco A
    [observacao] => Qualquer coisa � valida aqui!
    [clientes] => Array
        (
            [0] => Array
                (
                    [id] => 237
                    [id_endereco] => 32
                    [nome] => Joao Paulo
                    [data_inicio] => 22/03/2016
                    [telefones] => Array
                        (
                            [donoTelefone] => 
                        )

                    [comboTelOwner] => <option value='Joao Paulo'>Joao Paulo</option><option value='Augusta Ap Raymo Longo'>Augusta Ap Raymo Longo</option><option value='Karina Longo'>Karina Longo</option>
                )

            [1] => Array
                (
                    [id] => 238
                    [id_endereco] => 32
                    [nome] => Augusta Ap Raymo Longo
                    [data_inicio] => 22/03/2016
                    [telefones] => Array
                        (
                            [0] => Array
                                (
                                    [ddd] => 16
                                    [numero] => 991655725
                                    [id_endereco] => 32
                                    [id_cliente] => 238
                                    [fone_tipo] => 1
                                )

                            [donoTelefone] => Augusta Ap Raymo Longo
                        )

                    [comboTelOwner] => <option value='Joao Paulo'>Joao Paulo</option><option value='Augusta Ap Raymo Longo' selected='selected'>Augusta Ap Raymo Longo</option><option value='Karina Longo'>Karina Longo</option>
                )

            [2] => Array
                (
                    [id] => 239
                    [id_endereco] => 32
                    [nome] => Karina Longo
                    [data_inicio] => 22/03/2016
                    [telefones] => Array
                        (
                            [donoTelefone] => 
                        )

                    [comboTelOwner] => <option value='Joao Paulo'>Joao Paulo</option><option value='Augusta Ap Raymo Longo'>Augusta Ap Raymo Longo</option><option value='Karina Longo'>Karina Longo</option>
                )

        )

    [cep] => 14076160
    [estado] => SP
    [cidade] => Ribeir�o Preto
    [bairro] => Independ�ncia
    [tipo_logradouro] => Rua
    [logradouro] =>  Brigadeiro Tobias de Aguiar
    [telefonesComun] => Array
        (
            [0] => Array
                (
                    [ddd] => 16
                    [numero] => 30110911
                    [id_endereco] => 32
                    [id_cliente] => 
                    [fone_tipo] => 0
                )

            [1] => Array
                (
                    [ddd] => 16
                    [numero] => 36286574
                    [id_endereco] => 32
                    [id_cliente] => 
                    [fone_tipo] => 0
                )

        )

)

Answer 1

对我来说，你的代码不起作用，因为你不使用id，Bloco A等字符串的引号......你还需要在每个元素之间使用逗号。 Discriminator。