Detailed explanation of PHP script and database functions (Part 1)_PHP tutorial

In the current situation where the Internet is developing rapidly and e-commerce websites are emerging in endlessly, there are increasingly higher requirements for the efficiency and quality of website development.

For large-scale websites with complex structures and extensive content, it is necessary to achieve dynamic and convenient management of the website. Data management is inseparable from the support of database systems. An important indicator of measuring a CGI language is its ability to access the backend database, efficiency, etc.

And the new features of the currently popular PHP scripting language bring us a new feeling. It supports design and development in an object-oriented manner. At the same time, in order to meet the unique needs of web pages, templates, XML support, etc. have been used to bring new methods of website development. In terms of language structure, PHP has a structure similar to the C++ language, and introduces the concept of classes to simplify development.

PHP also has powerful database support capabilities. Here we will first introduce the general process of PHP accessing the database through examples, and then introduce an advanced application of PHP accessing the database through database storage of files. Finally, through the use examples of the database class, a truly practical and efficient database development method is introduced.


Figure 1

Introduction to PHP database functions
PHP provides support for more than 10 common databases, such as Oracle, dBase, Informix, SQL Server, Sysbase, MySQL, etc. It is precisely because of the extensive database support that the application scope of PHP has been expanded, allowing various applications to be developed using PHP.

Among various databases, MySQL has been widely used due to its free, cross-platform, easy to use, and high access efficiency. Many central websites use the best combination of PHP+MySQL.

Oracle is a typical large-scale database application system. If the website you design has a large amount of data and high performance and efficiency requirements, Oracle is a good choice.

On the Win32 platform, SQL Server occupies a larger market. PHP can access SQL Server.

PHP encapsulates various database access methods, and the functions for different database systems are also very similar, increasing the convenience of use.

Below, we will take a simple talent Information Exchange Center (see Figure 1) as an example to program to implement the online submission and browsing functions of personal resumes. Describes the entire process of PHP database operations. The database uses the most commonly used MySQL database.

Basic steps for PHP database operation
We will create a database named ResumeDB on the local machine. There is a table named Resume in the database. The table stores resume numbers, personnel names, personal profiles, and resume files in Word format.

1. Creation of database

Switch to the /usr/local/mysql/bin directory, and on the command line, execute the following statement to create the database:

./mysqladmin-u root-p create ResumeDB

Enter password:

Enter the password when prompted. If the database is used for the first time, the default password is blank, just press Enter.

Then create a table to save your resume.

Create a text file Resume.sql with the following content:

use ResumeDB;

CREATE TABLE Resume (

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http://www.bkjia.com/PHPjc/364138.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/364138.htmlTechArticleIn the current situation where the Internet is developing rapidly and e-commerce websites are emerging in endlessly, the efficiency and quality of website development have been put forward to improve the efficiency and quality of website development. There are higher and higher demands. For large and complex structures and complex content...