How to import Access and Excel into Mysql Part 2_PHP Tutorial
one. Mysql database installation, database building and ODBC installation settings
Mysql and ODBC drivers can be downloaded from its homepage (http://www.mysql.com/). Click on Latest Versions on the right and download the corresponding version. . Here we need to download the Intel version of Mysql (the latest version is 3.23.40), and the ODBC driver is MyODBC 2.50.37 for NT/2000 (full setup). If you use Win95/98, the driver is different, so please pay attention to the distinction.
Then you can install it. The installation of Mysql is very simple. Unzip it to a directory (C: mysql). In Win2000, Mysql can be run as a service of Windows. Run "C: mysql inmysqld-nt --install", and then in the service of the Win2000 management tool, we can find that the Mysql service is running, but I found that it is also possible to run winmysqladmin.exe directly. At this time, you will be asked to enter a password. This is Please remember the Mysql connection password. The default connection has no password (the user is root).
The next step is to create the database and table. Since the data from Access and Excel must be imported, the table must include all fields of both. For the sake of simplicity, only some of the fields are selected for explanation. Run cmd to enter the command line mode, switch to the c:mysql in directory, and execute "mysqladmin create build". This command is to create a database. Build is the name of the database. After success, execute "mysql" and enter "Mysql>" In command line mode, execute the following command:
mysql>use build;
mysql>CREATE TABLE loupan (
id int(10) unsigned NOT NULL auto_increment,
loupantype varchar(6),
inputdate date,
at_whatsection varchar(6),
buildname varchar(50),
buildaddress varchar(50),
room tinyint(4),
hall tinyint(4),
areasize decimal(10,2),
exp_sellprice decimal(13,2),
ownername varchar(20),
contactway varchar(50),
memo varchar(255),
updatestatus char(1),
goodloupan char(1),
PRIMARY KEY (id)
);
Then the success prompt of Query OK, 0 rows affected (0.04 sec) will appear , use build above means to switch the current database to build, and the following statement is the command to build the table. The fields from top to bottom represent the ID number (automatically added by 1, and it is the primary key of the table), the type of real estate, and the input Date, area, property name, address, number of rooms, number of halls, area, expected selling price, owner’s name, contact information, remarks, update status, and property logo.
The next step is to install the ODBC driver for Mysql. The installation of MyODBC is also fool-proof. Run setup and confirm step by step. After that, you can set it in the ODBC data source in the control panel. Click "System DSN", select "Add", select "mysql" in the driver list, and a configuration page will pop up. In Windows DSN Name Enter the name of the data source, enter build here (you can also enter other names, which are not necessarily the same as the name of the database). In "MySQL host (name or IP)", enter "localhost", which means that Mysql is running on this machine. , enter the name of the database "build" in Mysql Database Name, enter "root" in User, and enter the password you just set in PassWord. If it was not set just now, leave it blank. After pressing "OK", the system data will be displayed. There is an additional "build" item in the source, so the Mysql ODBC data source is set up successfully.

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 is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

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.

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

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 remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.


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