search
Homephp教程php手册php中JSON的使用方法,phpJSON使用方法

php中JSON的使用方法,phpJSON使用方法

从5.2版本开始,PHP原生提供json_encode()和json_decode()函数,前者用于编码,后者用于解码。
json_encode()                                                                      
该函数主要用来将数组和对象,转换为json格式。

复制代码 代码如下:
$arr = array ('a'=>'a','b'=>'b','c'='c','d'=>'d','e'='e');
echo json_encode($arr);

输出结果:
json只接受utf-8编码的字符,json_encode()的参数必须是utf-8编码。

class person 
{ 
  public $name; 
  public $age; 
  public $height; 
  function __construct($name,$age,$height) 
  { 
    $this->name = $name; 
    $this->age = $age; 
    $this->height = $height;   
  }  
} 
$obj = new person("zhangsan",20,100); 
$foo_json = json_encode($obj); 
echo $foo_json; 

输出结果:
当类中的属性为私有变量的时候,则不会输出。
json_decode()                                                                      
该函数用于将json文本转换为相应的PHP数据结构。

复制代码 代码如下:
$json = '{"a":"hello","b":"world","c":"zhangsan","d":20,"e":170}';
var_dump(json_decode($json));

输出结果:
通常情况下,json_decode()总是返回一个PHP对象。
转成数组的:

复制代码 代码如下:
$json = '{"a":"hello","b":"world","c":"zhangsan","d":20,"e":170}';
var_dump(json_decode($json,ture));

以上所述就是本文的全部内容了,希望大家能够喜欢。

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools