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在PHP中循环使用JSON

codeigniter json php

Rutger Huijsmans · 技术社区 · 8 年前

我正在尝试循环使用我发布到PHP后端的JSON。JSON如下所示:

[
    {
        "number":"5613106"
    },
    {
        "number":"56131064" 
    },
    {
        "number":"56131063" 
    }
]

我希望能够打印我使用单独发布的每个数字

echo $number;

$number = $json['number'];
echo $number;

我的职能:

public function check_users_post()
{
    $json = $this->request->body;
    print_r($json);
    $this->response($json, REST_Controller::HTTP_OK);
}

输出:

Array
(
    [0] => Array
        (
            [number] => 5613106
        )

    [1] => Array
        (
            [number] => 56131064
        )

    [2] => Array
        (
            [number] => 56131063
        )

)

4 回复 | 直到 8 年前

Rohith K N 8 年前

希望这个通用迭代器能对您有所帮助。

$jsonIterator = new RecursiveIteratorIterator(
        new RecursiveArrayIterator(json_decode($json, TRUE)),
        RecursiveIteratorIterator::SELF_FIRST);


foreach ($jsonIterator as $key => $val) {
    if(is_array($val)) {
        echo "$key:\n";
    } else {
        echo "$key => $val\n";
    }
}

Sagar 8 年前

使用

json_decode()

PHP内置函数,用于将json解码回PHP变量或数组,然后循环遍历每个索引和打印编号。

Rutger Huijsmans 8 年前

这样做:

public function check_users_post()
{
    $json = $this->request->body;

    $jsonIterator = new RecursiveIteratorIterator(
        new RecursiveArrayIterator($json),
        RecursiveIteratorIterator::SELF_FIRST);

    $phone_numbers = "";

    foreach ($jsonIterator as $key => $val) {
        if(is_array($val)) {

        } else {
            $phone_numbers = "$phone_numbers" . ", " . "$val";
        }
    }

    $phone_numbers = substr($phone_numbers, 2);
    $phone_numbers = "(" . $phone_numbers . ")";

    $query = $this->db->query("SELECT * FROM users WHERE user_number in $phone_numbers;");
    $result = $query->result();
    $this->response($result, REST_Controller::HTTP_OK);

    if (mysql_num_rows($result)==0) {
        $data = [ 'message' => 'No users returned'];
        $this->response($data, REST_Controller::HTTP_BAD_REQUEST);
    } else {
        $this->response($result, REST_Controller::HTTP_OK);
    }
}

Ahmer Saeed 8 年前

描述

首先将JSON字符串化,然后使用JSON_DECODE()函数,该函数将为您提供数组,然后使用foreach循环对该数组进行迭代,从而为您提供要回显的每个键。

密码

             $str = '[
                  {
                   "number":"5613106"
                  },
                  {
                   "number":"56131064"  
                  },
                  {
                   "number":"56131063"  
                  }
               ]';
            $array = json_decode($str, true);
            echo "<pre>";
            foreach ($array as $key => $key_value) { // then loop through it
                echo "<br>";
                echo $array[$key]['number'];
                echo "<br>";
           }