PHP5正式版出炉
php5
Some of the key features of PHP 5 include:
The Zend Engine II with a new object model and dozens of new features.
XML support has been completely redone in PHP 5, all extensions are now focused around the excellent libxml2 library (http://www.xmlsoft.org/).
A new SimpleXML extension for easily accessing and manipulating XML as PHP objects. It can also interface with the DOM extension and vice-versa.
A brand new built-in SOAP extension for interoperability with Web Services.
A new MySQL extension named MySQLi for developers using MySQL 4.1 and later. This new extension includes an object-oriented interface in addition to a traditional interface; as well as support for many of MySQL's new features, such as prepared statements.
SQLite has been bundled with PHP. For more information on SQLite, please visit their website.
Streams have been greatly improved, including the ability to access low-level socket operations on streams.
And lots more...
PHP5加入了最新的ZENDII引擎；
对XML完美支持；
支持SAOP协议；
与MYSQL数据库服务器紧密结合，以对象方式支持MYSQL4.*的新特性
将新型数据库SQLLite绑定到PHP
流式控制加强
抛弃PHP4中的不合理部分
PHP5据说适用企业级开发，面向对象，类处理更加完善
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The relationship between mysql user and database
Apr 08, 2025 pm 07:15 PM
In MySQL database, the relationship between the user and the database is defined by permissions and tables. The user has a username and password to access the database. Permissions are granted through the GRANT command, while the table is created by the CREATE TABLE command. To establish a relationship between a user and a database, you need to create a database, create a user, and then grant permissions.
MySQL: The Ease of Data Management for Beginners
Apr 09, 2025 am 12:07 AM
MySQL is suitable for beginners because it is simple to install, powerful and easy to manage data. 1. Simple installation and configuration, suitable for a variety of operating systems. 2. Support basic operations such as creating databases and tables, inserting, querying, updating and deleting data. 3. Provide advanced functions such as JOIN operations and subqueries. 4. Performance can be improved through indexing, query optimization and table partitioning. 5. Support backup, recovery and security measures to ensure data security and consistency.
Can I retrieve the database password in Navicat?
Apr 08, 2025 pm 09:51 PM
Navicat itself does not store the database password, and can only retrieve the encrypted password. Solution: 1. Check the password manager; 2. Check Navicat's "Remember Password" function; 3. Reset the database password; 4. Contact the database administrator.
Query optimization in MySQL is essential for improving database performance, especially when dealing with large data sets
Apr 08, 2025 pm 07:12 PM
1. Use the correct index to speed up data retrieval by reducing the amount of data scanned select*frommployeeswherelast_name='smith'; if you look up a column of a table multiple times, create an index for that column. If you or your app needs data from multiple columns according to the criteria, create a composite index 2. Avoid select * only those required columns, if you select all unwanted columns, this will only consume more server memory and cause the server to slow down at high load or frequency times For example, your table contains columns such as created_at and updated_at and timestamps, and then avoid selecting * because they do not require inefficient query se
How to create navicat premium
Apr 09, 2025 am 07:09 AM
Create a database using Navicat Premium: Connect to the database server and enter the connection parameters. Right-click on the server and select Create Database. Enter the name of the new database and the specified character set and collation. Connect to the new database and create the table in the Object Browser. Right-click on the table and select Insert Data to insert the data.
How to view mysql
Apr 08, 2025 pm 07:21 PM
View the MySQL database with the following command: Connect to the server: mysql -u Username -p Password Run SHOW DATABASES; Command to get all existing databases Select database: USE database name; View table: SHOW TABLES; View table structure: DESCRIBE table name; View data: SELECT * FROM table name;
How to copy tables in mysql
Apr 08, 2025 pm 07:24 PM
Copying a table in MySQL requires creating new tables, inserting data, setting foreign keys, copying indexes, triggers, stored procedures, and functions. The specific steps include: creating a new table with the same structure. Insert data from the original table into a new table. Set the same foreign key constraint (if the original table has one). Create the same index. Create the same trigger (if the original table has one). Create the same stored procedure or function (if the original table is used).
How to view database password in Navicat for MariaDB?
Apr 08, 2025 pm 09:18 PM
Navicat for MariaDB cannot view the database password directly because the password is stored in encrypted form. To ensure the database security, there are three ways to reset your password: reset your password through Navicat and set a complex password. View the configuration file (not recommended, high risk). Use system command line tools (not recommended, you need to be proficient in command line tools).
