Home php教程 php手册 php开发_链接mysql数据库的一个类

php开发_链接mysql数据库的一个类

Jun 13, 2016 am 10:48 AM
class co mysql php develop Effect database of kind structure run Link project


 项目结构:

运行效果;




conn.php
 
 1  2 class ConnectionMySQL{
 3     //主机
 4     private $host="localhost";
 5     //数据库的username
 6     private $name="root";
 7     //数据库的password
 8     private $pass="";
 9     //数据库名称
10     private $table="phptest";
11     //编码形式
12     private $ut="utf-8";
13
14
15     //构造函数
16     function __construct(){
17         $this->ut=$ut;
18         $this->connect();
19
20     }
21
22     //数据库的链接
23     function connect(){
24         $link=mysql_connect($this->host,$this->name,$this->pass) or die ($this->error());
25         mysql_select_db($this->table,$link) or die("没该数据库:".$this->table);
26         mysql_query("SET NAMES '$this->ut'");
27     }
28
29     function query($sql, $type = '') {
30         if(!($query = mysql_query($sql))) $this->show('Say:', $sql);
31         return $query;
32     }
33
34     function show($message = '', $sql = '') {
35         if(!$sql) echo $message;
36         else echo $message.'
'.$sql;
37     }
38
39     function affected_rows() {
40         return mysql_affected_rows();
41     }
42
43     function result($query, $row) {
44         return mysql_result($query, $row);
45     }
46
47     function num_rows($query) {
48         return @mysql_num_rows($query);
49     }
50
51     function num_fields($query) {
52         return mysql_num_fields($query);
53     }
54
55     function free_result($query) {
56         return mysql_free_result($query);
57     }
58
59     function insert_id() {
60         return mysql_insert_id();
61     }
62
63     function fetch_row($query) {
64         return mysql_fetch_row($query);
65     }
66
67     function version() {
68         return mysql_get_server_info();
69     }
70
71     function close() {
72         return mysql_close();
73     }
74
75     //向$table表中插入值 www.2cto.com
76     function fn_insert($table,$name,$value){
77         $this->query("insert into $table ($name) value ($value)");
78     }
79     //根据$id值删除表$table中的一条记录
80     function fn_delete($table,$id,$value){
81         $this->query("delete from $table where $id=$value");
82         echo "id为". $id." 的记录被成功删除!";
83     }
84 }
85
86 $db =  new ConnectionMySQL();
87
88 $db->fn_insert('test','id,name,sex',"'','hongtenzone','M'");
89 $db->fn_delete('test', 'id', 1);
90
91 ?>
 

 摘自 Hongten

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

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 Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1268
29
C# Tutorial
1248
24
Explain the purpose of foreign keys in MySQL. Explain the purpose of foreign keys in MySQL. Apr 25, 2025 am 12:17 AM

In MySQL, the function of foreign keys is to establish the relationship between tables and ensure the consistency and integrity of the data. Foreign keys maintain the effectiveness of data through reference integrity checks and cascading operations. Pay attention to performance optimization and avoid common errors when using them.

Compare and contrast MySQL and MariaDB. Compare and contrast MySQL and MariaDB. Apr 26, 2025 am 12:08 AM

The main difference between MySQL and MariaDB is performance, functionality and license: 1. MySQL is developed by Oracle, and MariaDB is its fork. 2. MariaDB may perform better in high load environments. 3.MariaDB provides more storage engines and functions. 4.MySQL adopts a dual license, and MariaDB is completely open source. The existing infrastructure, performance requirements, functional requirements and license costs should be taken into account when choosing.

What happens if session_start() is called multiple times? What happens if session_start() is called multiple times? Apr 25, 2025 am 12:06 AM

Multiple calls to session_start() will result in warning messages and possible data overwrites. 1) PHP will issue a warning, prompting that the session has been started. 2) It may cause unexpected overwriting of session data. 3) Use session_status() to check the session status to avoid repeated calls.

Redis: Understanding Its Architecture and Purpose Redis: Understanding Its Architecture and Purpose Apr 26, 2025 am 12:11 AM

Redis is a memory data structure storage system, mainly used as a database, cache and message broker. Its core features include single-threaded model, I/O multiplexing, persistence mechanism, replication and clustering functions. Redis is commonly used in practical applications for caching, session storage, and message queues. It can significantly improve its performance by selecting the right data structure, using pipelines and transactions, and monitoring and tuning.

Composer: Aiding PHP Development Through AI Composer: Aiding PHP Development Through AI Apr 29, 2025 am 12:27 AM

AI can help optimize the use of Composer. Specific methods include: 1. Dependency management optimization: AI analyzes dependencies, recommends the best version combination, and reduces conflicts. 2. Automated code generation: AI generates composer.json files that conform to best practices. 3. Improve code quality: AI detects potential problems, provides optimization suggestions, and improves code quality. These methods are implemented through machine learning and natural language processing technologies to help developers improve efficiency and code quality.

MySQL: The Database, phpMyAdmin: The Management Interface MySQL: The Database, phpMyAdmin: The Management Interface Apr 29, 2025 am 12:44 AM

MySQL and phpMyAdmin can be effectively managed through the following steps: 1. Create and delete database: Just click in phpMyAdmin to complete. 2. Manage tables: You can create tables, modify structures, and add indexes. 3. Data operation: Supports inserting, updating, deleting data and executing SQL queries. 4. Import and export data: Supports SQL, CSV, XML and other formats. 5. Optimization and monitoring: Use the OPTIMIZETABLE command to optimize tables and use query analyzers and monitoring tools to solve performance problems.

MongoDB's Future: The State of the Database MongoDB's Future: The State of the Database Apr 25, 2025 am 12:21 AM

MongoDB's future is full of possibilities: 1. The development of cloud-native databases, 2. The fields of artificial intelligence and big data are focused, 3. The improvement of security and compliance. MongoDB continues to advance and make breakthroughs in technological innovation, market position and future development direction.

How to uninstall MySQL and clean residual files How to uninstall MySQL and clean residual files Apr 29, 2025 pm 04:03 PM

To safely and thoroughly uninstall MySQL and clean all residual files, follow the following steps: 1. Stop MySQL service; 2. Uninstall MySQL packages; 3. Clean configuration files and data directories; 4. Verify that the uninstallation is thorough.

See all articles