Introduction to the method of uploading json files in PHP (code example)

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HTTP: A hypertext transmission protocol. It is a standard protocol for computer-to-computer communication. It is now generally used for end-to-end communication.

1. Agreed content

• Request/response message format

• Request method GET/POST

• Response status 200/404/302/304

• Default request/response header

The header function in PHP is used to set the response header

<?php  
header(&#39;content-type:text/html&#39;);
?>

Supplement:

<?php  
header(&#39;Location:01.php&#39;);
?>

The client browser will automatically Jump to the specified address

JSON
JSON: A means of expressing data similar to js literals

1. The attribute name in JSON must be Use double quotes

2. Strings in JSON must use double quotes (js strings can use single quotes)

3. JSON does not allow comments

JSON data type
null:

 null

string:

"ssq"

boolean:

ture

number:

 12

object:

 {
    "name": "ssq",
    "age": 12,
    "gender": ture,
    "boyfrind": null
}

array:

 ["张三", "李四", "王五"]

JSON basic format

var obj = [
    {"name": "ss", "age": 12, "email": "ssss", "url": "sssss.com", "images": ["./images/01.jpg"]},
    {"name": "ss", "age": 12, "email": "ssss", "url": "sssss.com", "images": ["./images/01.jpg"]},
    {"name": "ss", "age": 12, "email": "ssss", "url": "sssss.com", "images": ["./images/01.jpg"]},
    {"name": "ss", "age": 12, "email": "ssss", "url": "sssss.com", "images": ["./images/01.jpg"]},
    {"name": "ss", "age": 12, "email": "ssss", "url": "sssss.com", "images": ["./images/01.jpg"]}
]

JSON conversion

Deserialize JSON in PHP

<?php
$contents = file_get_contents(&#39;storage.json&#39;);
$data = json_decode($contents, true);
?>

and convert it into the form of object array in PHP

01Example display

<?php // 获取文件中记录的数据，并展示到表格中（动态生成表格的HTML标签）
$contents = file_get_contents(&#39;storage.json&#39;);
// $contents => JSON 格式的字符串
// 把 JSON 格式的字符串转换为对象的过程叫做反序列化

// json_decode 默认反序列化时 将 JSON 中的对象转换为 PHP 中 stdClass 类型的对象
$data = json_decode($contents, true);
// $data => []

?>
nbsp;html>


  <meta>
  <title>音乐列表</title>
  <link>


  <div>
    <h1>音乐列表</h1>
    <hr>
    <div>
      <a>添加</a>
    </div>
    <table>
      <thead>
        <tr>
          <th>标题</th>
          <th>歌手</th>
          <th>海报</th>
          <th>音乐</th>
          <th>操作</th>
        </tr>
      </thead>
      <tbody>
        <?php  foreach ($data as $item): ?>
        <tr>
          <td><?php  echo $item[&#39;title&#39;] ?></td>
          <td><?php  echo $item[&#39;artist&#39;] ?></td>
          <td>
<img  alt="Introduction to the method of uploading json files in PHP (code example)" >" alt=""></td>
          <td><audio>" controls></audio></td>
          <td><button>删除</button></td>
        </tr>
        <?php  endforeach ?>
      </tbody>
    </table>
  </div>

Rendering

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