为什么不能获取PHP表单变量的_PHP教程
如果大家使用PHP4.2版本或者以上的请看这里。 设置register_globals = on 或者 加入以下代码： // allow script to work with registerglobals off if ( function_exists(ini_get) ) { $onoff = ini_get(register_globals); } else { $onoff = get_cfg_var(register_globals); } if ($onoff != 1) { @extract($HTTP_SERVER_VARS, EXTR_SKIP); @extract($HTTP_COOKIE_VARS, EXTR_SKIP); @extract($HTTP_POST_FILES, EXTR_SKIP); @extract($HTTP_POST_VARS, EXTR_SKIP); @extract($HTTP_GET_VARS, EXTR_SKIP); @extract($HTTP_ENV_VARS, EXTR_SKIP); } 详细参考这里： http://www.21php.com/tutorial/tutorial.php?tid=21 相关讨论请看这里： http://www.21php.com/forums/showthread.php?s=&postid=588#post588 http://www.21php.com/forums/showthread.php?s=&postid=400#post400
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How can you prevent a class from being extended or a method from being overridden in PHP? (final keyword)
Apr 08, 2025 am 12:03 AM
In PHP, the final keyword is used to prevent classes from being inherited and methods being overwritten. 1) When marking the class as final, the class cannot be inherited. 2) When marking the method as final, the method cannot be rewritten by the subclass. Using final keywords ensures the stability and security of your code.
Unable to log in to mysql as root
Apr 08, 2025 pm 04:54 PM
The main reasons why you cannot log in to MySQL as root are permission problems, configuration file errors, password inconsistent, socket file problems, or firewall interception. The solution includes: check whether the bind-address parameter in the configuration file is configured correctly. Check whether the root user permissions have been modified or deleted and reset. Verify that the password is accurate, including case and special characters. Check socket file permission settings and paths. Check that the firewall blocks connections to the MySQL server.
The Future of PHP: Adaptations and Innovations
Apr 11, 2025 am 12:01 AM
The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.
The relationship between Bootstrap Table garbled and page encoding
Apr 07, 2025 pm 12:03 PM
Bootstrap Table garbled is usually because the page encoding is inconsistent with the table data encoding. To solve this problem, you need to make sure they are consistent. The specific steps include: checking page and table data encoding, setting page encoding, and verifying the encoding. If UTF-8 is used, the server should also support it. If it cannot be resolved, try using the JavaScript encoding library.
PHP vs. Python: Understanding the Differences
Apr 11, 2025 am 12:15 AM
PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.
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).
PHP: Is It Dying or Simply Adapting?
Apr 11, 2025 am 12:13 AM
PHP is not dying, but constantly adapting and evolving. 1) PHP has undergone multiple version iterations since 1994 to adapt to new technology trends. 2) It is currently widely used in e-commerce, content management systems and other fields. 3) PHP8 introduces JIT compiler and other functions to improve performance and modernization. 4) Use OPcache and follow PSR-12 standards to optimize performance and code quality.
How to backup and restore database after mysql installation
Apr 08, 2025 am 11:45 AM
There is no absolutely optimal MySQL database backup and recovery solution, and it needs to be selected based on the amount of data, business importance, RTO and RPO. 1. Logical backup (mysqldump) is simple and easy to use, suitable for small databases, but slow and huge files; 2. Physical backup (xtrabackup) is fast, suitable for large databases, but is more complicated to use. The backup strategy needs to consider the backup frequency (RPO decision), backup method (data quantity and time requirement decision) and storage location (off-site storage is more secure), and regularly test the backup and recovery process to avoid backup file corruption, permission problems, insufficient storage space, network interruption and untested issues, and ensure data security.
