基于jquery+ajax实现的多选框，怎么读取数据库信息
jQuery 数据库
我在这里http://blog.csdn.net/zdy4452406/article/details/8806962基于jquery+ajax实现的多选框，怎么读取数据库信息呢？PHP要怎么写？我的mysql数据表如下：--
-- 表的结构 `3g_district`
--
CREATE TABLE IF NOT EXISTS `3g_district` (
`d_id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
`d_name` char(255) NOT NULL,
`d_level` tinyint(4) unsigned NOT NULL DEFAULT '0',
`d_pid` mediumint(8) unsigned NOT NULL DEFAULT '0',
`d_list` smallint(6) NOT NULL DEFAULT '0',
PRIMARY KEY (`d_id`),
KEY `upid` (`d_pid`,`d_list`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=45052 ;
--
-- 转存表中的数据 `3g_district`
--
INSERT INTO `3g_district` (`d_id`, `d_name`, `d_level`, `d_pid`, `d_list`) VALUES
(1, '北京市', 1, 0, 0),
(2, '天津市', 1, 0, 0),
(3, '河北省', 1, 0, 0),
(4, '山西省', 1, 0, 0),
(5, '内蒙古自治区', 1, 0, 0),
(6, '辽宁省', 1, 0, 0),
(7, '吉林省', 1, 0, 0),
(8, '黑龙江省', 1, 0, 0),
(9, '上海市', 1, 0, 0),
(10, '江苏省', 1, 0, 0),
(11, '浙江省', 1, 0, 0),
(12, '安徽省', 1, 0, 0),
(13, '福建省', 1, 0, 0),
(14, '江西省', 1, 0, 0),
(15, '山东省', 1, 0, 0),
(16, '河南省', 1, 0, 0),
(17, '湖北省', 1, 0, 0),
(18, '湖南省', 1, 0, 0),
(19, '广东省', 1, 0, 0),
(20, '广西壮族自治区', 1, 0, 0),
(21, '海南省', 1, 0, 0),
(22, '重庆市', 1, 0, 0),
(23, '四川省', 1, 0, 0),
(24, '贵州省', 1, 0, 0),
(25, '云南省', 1, 0, 0),
(26, '西藏自治区', 1, 0, 0),
(27, '陕西省', 1, 0, 0),
(28, '甘肃省', 1, 0, 0),
(29, '青海省', 1, 0, 0),
(30, '宁夏回族自治区', 1, 0, 0),
(31, '新疆维吾尔自治区', 1, 0, 0),
(32, '台湾省', 1, 0, 0),
(33, '香港特别行政区', 1, 0, 0),
(34, '澳门特别行政区', 1, 0, 0),
(35, '海外', 1, 0, 1),
(36, '其他', 1, 0, 2),
(37, '东城区', 2, 1, 0),
(38, '西城区', 2, 1, 0),
(39, '崇文区', 2, 1, 0),
(40, '宣武区', 2, 1, 0),
(41, '朝阳区', 2, 1, 0),
(42, '丰台区', 2, 1, 0),
(43, '石景山区', 2, 1, 0),
(44, '海淀区', 2, 1, 0),
(45, '门头沟区', 2, 1, 0),
(46, '房山区', 2, 1, 0),
(47, '通州区', 2, 1, 0),
(48, '顺义区', 2, 1, 0),
(49, '昌平区', 2, 1, 0),
(50, '大兴区', 2, 1, 0),
(51, '怀柔区', 2, 1, 0),
(52, '平谷区', 2, 1, 0),
(53, '密云县', 2, 1, 0),
(54, '延庆县', 2, 1, 0),
(55, '和平区', 2, 2, 0),
(56, '河东区', 2, 2, 0),
(57, '河西区', 2, 2, 0),
(58, '南开区', 2, 2, 0),
(59, '河北区', 2, 2, 0),
(60, '红桥区', 2, 2, 0),
(61, '塘沽区', 2, 2, 0),
(62, '汉沽区', 2, 2, 0),
(63, '大港区', 2, 2, 0),
(64, '东丽区', 2, 2, 0),
(65, '西青区', 2, 2, 0),
(66, '津南区', 2, 2, 0),
(67, '北辰区', 2, 2, 0),
(68, '武清区', 2, 2, 0),
(69, '宝坻区', 2, 2, 0),
(70, '宁河县', 2, 2, 0),
(71, '静海县', 2, 2, 0),
(72, '蓟县', 2, 2, 0),
(73, '石家庄市', 2, 3, 0),
(74, '唐山市', 2, 3, 0),
(75, '秦皇岛市', 2, 3, 0),
(76, '邯郸市', 2, 3, 0),
(77, '邢台市', 2, 3, 0),
(78, '保定市', 2, 3, 0),
(79, '张家口市', 2, 3, 0),
(80, '承德市', 2, 3, 0),
(81, '衡水市', 2, 3, 0),
(82, '廊坊市', 2, 3, 0),
请各帮帮忙
回复讨论(解决方案)
jquery GET 你的 php文件
php 直接读数据库，和常见的一样。
不就行了？
不行，PHP能读出数据，但在JQ代码里显示不出来，分层显示没数据。
回传的是这样的字符串：
数据值:显示字符串,数据值:显示字符串,数据值:显示字符串,....
回传的是这样的字符串：
数据值:显示字符串,数据值:显示字符串,数据值:显示字符串,....
能写一个PHP文件吗？怎样调用数据值：显示显示字符串，数据值：显示显示字符串
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
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
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,
How does session hijacking work and how can you mitigate it in PHP?
Apr 06, 2025 am 12:02 AM
Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.
What are Enumerations (Enums) in PHP 8.1?
Apr 03, 2025 am 12:05 AM
The enumeration function in PHP8.1 enhances the clarity and type safety of the code by defining named constants. 1) Enumerations can be integers, strings or objects, improving code readability and type safety. 2) Enumeration is based on class and supports object-oriented features such as traversal and reflection. 3) Enumeration can be used for comparison and assignment to ensure type safety. 4) Enumeration supports adding methods to implement complex logic. 5) Strict type checking and error handling can avoid common errors. 6) Enumeration reduces magic value and improves maintainability, but pay attention to performance optimization.
Describe the SOLID principles and how they apply to PHP development.
Apr 03, 2025 am 12:04 AM
The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.
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.
What is REST API design principles?
Apr 04, 2025 am 12:01 AM
RESTAPI design principles include resource definition, URI design, HTTP method usage, status code usage, version control, and HATEOAS. 1. Resources should be represented by nouns and maintained at a hierarchy. 2. HTTP methods should conform to their semantics, such as GET is used to obtain resources. 3. The status code should be used correctly, such as 404 means that the resource does not exist. 4. Version control can be implemented through URI or header. 5. HATEOAS boots client operations through links in response.
How do you handle exceptions effectively in PHP (try, catch, finally, throw)?
Apr 05, 2025 am 12:03 AM
In PHP, exception handling is achieved through the try, catch, finally, and throw keywords. 1) The try block surrounds the code that may throw exceptions; 2) The catch block handles exceptions; 3) Finally block ensures that the code is always executed; 4) throw is used to manually throw exceptions. These mechanisms help improve the robustness and maintainability of your code.
What are anonymous classes in PHP and when might you use them?
Apr 04, 2025 am 12:02 AM
The main function of anonymous classes in PHP is to create one-time objects. 1. Anonymous classes allow classes without names to be directly defined in the code, which is suitable for temporary requirements. 2. They can inherit classes or implement interfaces to increase flexibility. 3. Pay attention to performance and code readability when using it, and avoid repeatedly defining the same anonymous classes.
