PHP generates mysql database data dictionary_PHP tutorial
php generates mysql database data dictionary
php generates the program code for mysql database data dictionary, which is more practical. The specific code is as follows:
<?php
header('Content-type:text/html;charset=utf-8');
/**
* 生成mysql数据字典
*
* @author www.phpernote.com<403656085@qq.com>
*/
//配置数据库
$dbserver="localhost";
$dbusername="root";
$dbpassword="root";
$database='test';
//其他配置
$title=$database.' 数据库数据字典';
$mysql_conn=@mysql_connect("$dbserver","$dbusername","$dbpassword") or die("Mysql connect is error.");
mysql_select_db($database,$mysql_conn);
mysql_query('SET NAMES utf8',$mysql_conn);
$table_result=mysql_query('show tables',$mysql_conn);
//取得所有的表名
while($row=mysql_fetch_array($table_result)){
$tables[]['TABLE_NAME']=$row[0];
}
//循环取得所有表的备注
foreach ($tables AS $k=>$v){
$sql='SELECT * FROM ';
$sql.='INFORMATION_SCHEMA.TABLES ';
$sql.='WHERE ';
$sql.="table_name='{$v['TABLE_NAME']}' AND table_schema='{$database}'";
$table_result=mysql_query($sql,$mysql_conn);
while($t=mysql_fetch_array($table_result)){
$tables[$k]['TABLE_COMMENT']=$t['TABLE_COMMENT'];
}
$sql='SELECT * FROM ';
$sql.='INFORMATION_SCHEMA.COLUMNS ';
$sql.='WHERE ';
$sql.="table_name='{$v['TABLE_NAME']}' AND table_schema='{$database}'";
$fields=array();
$field_result=mysql_query($sql,$mysql_conn);
while($t=mysql_fetch_array($field_result)){
$fields[]=$t;
}
$tables[$k]['COLUMN']=$fields;
}
mysql_close($mysql_conn);
$html='';
//循环所有表
foreach($tables AS $k=>$v){
$html.='<table border="1" cellspacing="0" cellpadding="0" align="center">';
$html.='<caption>'.$v['TABLE_COMMENT'].'（<span class="cr">'. $v['TABLE_NAME'].'</span>）</caption>';
$html.='<tbody><tr><th width="120">字段名</th><th width="120">数据类型</th><th width="120">默认值</th>
<th width="65">允许非空</th>
<th width="360">备注</th></tr>';
$html.='';
foreach($v['COLUMN'] AS $f){
$html.='<tr><td>'.$f['COLUMN_NAME'].'</td>';
$html.='<td>'.$f['COLUMN_TYPE'].'</td>';
$html.='<td>'.$f['COLUMN_DEFAULT'].'</td>';
$html.='<td>'.$f['IS_NULLABLE'].'</td>';
$html.='<td>'.$f['COLUMN_COMMENT'].($f['EXTRA']=='auto_increment'?'，自动递增':'').'</td>';
$html.='</tr>';
}
$html.='</tbody></table></p>';
}
//输出
echo '<html>
<head>
<title>'.$title.'</title>
<style>
body,td,th{font-family:"宋体"; font-size:12px;}
table{border-collapse:collapse;border:1px solid #CCC;background:#efefef;}
table caption{text-align:left; background-color:#fff; line-height:2em; font-size:14px; font-weight:bold; }
table th{text-align:left; font-weight:bold;height:26px; line-height:26px; font-size:12px; border:1px solid #CCC;}
table td{height:20px; font-size:12px; border:1px solid #CCC;background-color:#fff;}
table caption,table td,table th{padding:0px 3px;}
#version{text-align:center;margin:0 auto;}
.cr{color:#ff0033;}
</style>
</head>
<body>';
echo '<h1 id="title">'.$title.'</h1>';
echo $html;
$version='<p id="version">made by <a href="http://www.phpernote.com" target="_blank">www.phpernote.com</a></p>';
echo '<p> </p>'.$version.'<p> </p></body></html>';The generated result page is as shown below:
Articles you may be interested in
- Use MySQL database index appropriately to make the database run efficiently
- PHP uses the session_set_save_handler() function to Save the session to the MySQL database
- Solution for forgetting the MySQL database password of PHPnow
- Summary of the reasons and solutions for the gradual slowdown of the MySQL database server
- php uses array_flip to implement arrays Key-value exchange removes duplicate values from arrays
- php mysql database operation class
- In PHP, use curl's post method to submit data and get method to obtain web page data. Summary
- About how to modify the character set of mysql database
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
PHP's Purpose: Building Dynamic Websites
Apr 15, 2025 am 12:18 AM
PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.
PHP and Python: Different Paradigms Explained
Apr 18, 2025 am 12:26 AM
PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.
PHP and Python: Code Examples and Comparison
Apr 15, 2025 am 12:07 AM
PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.
Why Use PHP? Advantages and Benefits Explained
Apr 16, 2025 am 12:16 AM
The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.
PHP: Handling Databases and Server-Side Logic
Apr 15, 2025 am 12:15 AM
PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.
Choosing Between PHP and Python: A Guide
Apr 18, 2025 am 12:24 AM
PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.
MySQL's Role: Databases in Web Applications
Apr 17, 2025 am 12:23 AM
The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.
How to start mysql by docker
Apr 15, 2025 pm 12:09 PM
The process of starting MySQL in Docker consists of the following steps: Pull the MySQL image to create and start the container, set the root user password, and map the port verification connection Create the database and the user grants all permissions to the database
