A brief discussion on the method of formatting PHP json data-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

A brief discussion on the method of formatting PHP json data

PHPz

May 16, 2016 am 08:59 AM

php

this article will introduce you to the method of formatting php json data. it has certain reference value. friends in need can refer to it. i hope it will be helpful to everyone.

A brief discussion on the method of formatting PHP json data

php's json_encode can convert the array into a string in json format. the string is not indented, and chinese characters will be converted to unicode encoding, such as \u975a\u4ed4. it is difficult for people to read.

now this method is beautified again based on json_encode. make it easier for people to read the content.

1. use json_encode output

<?php  
   
header('content-type:application/json;charset=utf8');  
   
$arr = array(  
    'status' => true,  
    'errmsg' => '',  
    'member' =>array(  
        array(  
            'name' => '张三',  
            'gender' => '男'  
        ),  
        array(  
            'name' => '李四',  
            'gender' => '女'  
        )  
    )  
);  
   
echo json_encode($arr);  
   
?>

Copy after login

output:

1	`{"status":true,"errmsg":"","member":[{"name":"\u674e\u900d\u9065","gender":"\u7537"},{"name":"\u8d75\u7075\u513f","gender":"\u5973"}]}`

Copy after login

it can be seen that this format is very difficult for people to read.

2. use jsonformat to output

<?php  
   
/** json数据格式化 
* @param  mixed  $data   数据 
* @param  string $indent 缩进字符，默认4个空格 
* @return json 
*/  
function jsonformat($data, $indent=null){  
   
    // 对数组中每个元素递归进行urlencode操作，保护中文字符  
    array_walk_recursive($data, 'jsonformatprotect');  
   
    // json encode  
    $data = json_encode($data);  
   
    // 将urlencode的内容进行urldecode  
    $data = urldecode($data);  
   
    // 缩进处理  
    $ret = '';  
    $pos = 0;  
    $length = strlen($data);  
    $indent = isset($indent)? $indent : '    ';  
    $newline = "\n";  
    $prevchar = '';  
    $outofquotes = true;  
   
    for($i=0; $i<=$length; $i++){  
   
        $char = substr($data, $i, 1);  
   
        if($char=='"' && $prevchar!='\\'){  
            $outofquotes = !$outofquotes;  
        }elseif(($char=='}' || $char==']') && $outofquotes){  
            $ret .= $newline;  
            $pos --;  
            for($j=0; $j<$pos; $j++){  
                $ret .= $indent;  
            }  
        }  
   
        $ret .= $char;  
           
        if(($char==',' || $char=='{' || $char=='[') && $outofquotes){  
            $ret .= $newline;  
            if($char=='{' || $char=='['){  
                $pos ++;  
            }  
   
            for($j=0; $j<$pos; $j++){  
                $ret .= $indent;  
            }  
        }  
   
        $prevchar = $char;  
    }  
   
    return $ret;  
}  
   
/** 将数组元素进行urlencode 
* @param string $val 
*/  
function jsonformatprotect(&$val){  
    if($val!==true && $val!==false && $val!==null){  
        $val = urlencode($val);  
    }  
}  
   
header('content-type:application/json;charset=utf8');  
   
$arr = array(  
    'status' => true,  
    'errmsg' => '',  
    'member' =>array(  
        array(  
            'name' => '张三',  
            'gender' => '男'  
        ),  
        array(  
            'name' => '李四',  
            'gender' => '女'  
        )  
    )  
);  
   
echo jsonformat($arr);  
   
?> 　

Copy after login

output:

{  
    "status":true,  
    "errmsg":"",  
    "member":[  
        {  
            "name":"张三",  
            "gender":"男"  
        },  
        {  
            "name":"李四",  
            "gender":"女"  
        }  
    ]  
}

Copy after login

after php5.4, json_encode adds json_unescaped_unicode, json_pretty_print, etc. a constant parameter. make displaying chinese and formatting more convenient.

header('content-type:application/json;charset=utf8');    
     
$arr = array(    
    'status' => true,    
    'errmsg' => '',    
    'member' =>array(    
        array(    
            'name' => '张三',    
            'gender' => '男'    
        ),    
        array(    
            'name' => '李四',    
            'gender' => '女'    
        )    
    )    
);    
     
echo json_encode($arr, json_unescaped_unicode|json_pretty_print); 　

Copy after login

output:

{  
    "status": true,  
    "errmsg": "",  
    "member": [  
        {  
            "name": "张三",  
            "gender": "男"  
        },  
        {  
            "name": "李四",  
            "gender": "女"  
        }  
    ]  
}

Copy after login

json constant parameter description: the following constants represent the error type returned by json_last_error().

1	`json_error_none (integer)`

Copy after login

no error occurred. effective as of php 5.3.0.

1	`json_error_depth (integer)`

Copy after login

the maximum stack depth has been reached. effective as of php 5.3.0.

1	`json_error_state_mismatch (integer)`

Copy after login

an underflow or pattern mismatch occurred. effective as of php 5.3.0.

1	`json_error_ctrl_char (integer)`

Copy after login

the control character is wrong, maybe the encoding is wrong. effective as of php 5.3.0.

1	`json_error_syntax (integer)`

Copy after login

syntax error. effective as of php 5.3.0.

1	`json_error_utf8 (integer)`

Copy after login

exceptional utf-8 characters, perhaps due to incorrect encoding. this constant is available since php 5.3.1.

the following constants can be used in conjunction with the form option of json_encode().

1	`json_hex_tag (integer)`

Copy after login

all < and > are converted to \u003c and \u003e. effective as of php 5.3.0.

1	`json_hex_amp (integer)`

Copy after login

all &s are converted to \u0026. effective as of php 5.3.0.

1	`json_hex_apos (integer)`

Copy after login

all ' are converted to \u0027. effective as of php 5.3.0.

1	`json_hex_quot (integer)`

Copy after login

all " are converted to \u0022. effective since php 5.3.0.

1	`json_force_object (integer)`

Copy after login

causes a non-associative array to output a class (object) instead of an array. in the array: especially useful when empty and the receiver requires an object. effective as of php 5.3.0.

1	`json_numeric_check (integer)`

Copy after login

encode all numeric strings into numbers. effective as of php 5.3.3 .

1	`json_bigint_as_string (integer)`

Copy after login

encode large numbers into the original value of the original character. effective since php 5.4.0.

1	`json_pretty_print (integer)`

Copy after login

format the returned data with whitespace characters. since php 5.4.0 effective as of php 5.4.0.

1	`json_unescaped_slashes (integer)`

Copy after login

do not encode /. effective as of php 5.4.0.

1	`JSON_UNESCAPED_UNICODE (integer)`

Copy after login

encode multibyte unicode characters literally (the default is to encode \uxxxx). since php effective from 5.4.0.

recommended learning: "php video tutorial" p>

Statement of this Website

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

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

Video Face Swap

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

Hot Article

What's New in Windows 11 KB5054979 & How to Fix Update Issues

3 weeks ago By DDD

How to fix KB5055523 fails to install in Windows 11?

2 weeks ago By DDD

InZoi: How To Apply To School And University

3 weeks ago By DDD

How to fix KB5055518 fails to install in Windows 10?

2 weeks ago By DDD

Roblox: Dead Rails – How To Summon And Defeat Nikola Tesla

4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Where is the login entrance for gmail email?

7818

Java Tutorial

1647

CakePHP Tutorial

1402

Laravel Tutorial

1300

PHP Tutorial

1238

Related knowledge

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

See all articles