PHP中把数据库查询结果输出为json格式简单实例，查询结果json
PHP中把数据库查询结果输出为json格式简单实例，查询结果json
include/conn.php为数据库链接文件，不会的网上搜索
<?php
include './include/conn.php'; //数据库链接文件
$sql_notice = mysql_query('SELECT * FROM gg_notice where enable = "1" limit 0,10');
$notice = mysql_fetch_array($sql_notice, MYSQL_ASSOC);
print_r ($notice);
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>第一php网提供的教程--将数据库读取的数据生成json格式</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js" type="text/javascript"/></script> -->
<script language=javascript>
</script>
</head>
<body>
<pre class="brush:php;toolbar:false">
<h1 id="请注意两种方法生成的对象数组在结构上的区别">请注意两种方法生成的对象数组在结构上的区别</h1>
<?php
echo '<h1 id="法一">法一</h1>';
//假设以下数组是根据我们从数据库读取的数据生成的
$jarr=array('total'=>239,'row'=>array(
array('code'=>'001','name'=>'中国','addr'=>'Address 11','col4'=>'col4 data'),
array('code'=>'002','name'=>'Name 2','addr'=>'Address 12','col4'=>'col4 data'),
)
);
//法一：
$jobj=new stdclass();//实例化stdclass，这是php内置的空类，可以用来传递数据，由于json_decode后的数据是以对象数组的形式存放的，
//所以我们生成的时候也要把数据存储在对象中
foreach($jarr as $key=>$value){
$jobj->$key=$value;
}
print_r($jobj);//打印传递属性后的对象
echo '使用$jobj->row[0][\'code\']输出数组元素:'.$jobj->row[0]['code'].'<br>';
echo '编码后的json字符串：'.json_encode($jobj).'<br>';//打印编码后的json字符串
echo '<hr>';
//法二：
echo '<h1 id="法二">法二</h1>';
echo '编码后的json字符串：';
echo $str=json_encode($jarr);//将数组进行json编码
echo '<br>';
$arr=json_decode($str);//再进行json解码
print_r($arr);//打印解码后的数组，数据存储在对象数组中
echo '使用$arr->row[0]->code输出数组元素:'.$arr->row[0]->code;
?>
</body>
</html>
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
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
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
CakePHP Project Configuration
Sep 10, 2024 pm 05:25 PM
In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.
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
CakePHP Date and Time
Sep 10, 2024 pm 05:27 PM
To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.
CakePHP File upload
Sep 10, 2024 pm 05:27 PM
To work on file upload we are going to use the form helper. Here, is an example for file upload.
Discuss CakePHP
Sep 10, 2024 pm 05:28 PM
CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu
CakePHP Routing
Sep 10, 2024 pm 05:25 PM
In this chapter, we are going to learn the following topics related to routing ?
CakePHP Working with Database
Sep 10, 2024 pm 05:25 PM
Working with database in CakePHP is very easy. We will understand the CRUD (Create, Read, Update, Delete) operations in this chapter.
CakePHP Creating Validators
Sep 10, 2024 pm 05:26 PM
Validator can be created by adding the following two lines in the controller.
