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
1386
52
MySQL: An Introduction to the World's Most Popular Database
Apr 12, 2025 am 12:18 AM
MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.
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.
PHP's Current Status: A Look at Web Development Trends
Apr 13, 2025 am 12:20 AM
PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.
PHP: The Foundation of Many Websites
Apr 13, 2025 am 12:07 AM
The reasons why PHP is the preferred technology stack for many websites include its ease of use, strong community support, and widespread use. 1) Easy to learn and use, suitable for beginners. 2) Have a huge developer community and rich resources. 3) Widely used in WordPress, Drupal and other platforms. 4) Integrate tightly with web servers to simplify development deployment.
PHP: A Key Language for Web Development
Apr 13, 2025 am 12:08 AM
PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7
MySQL's Place: Databases and Programming
Apr 13, 2025 am 12:18 AM
MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen
The Enduring Relevance of PHP: Is It Still Alive?
Apr 14, 2025 am 12:12 AM
PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.
PHP vs. Python: Core Features and Functionality
Apr 13, 2025 am 12:16 AM
PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.
