[转]php5.3(放弃的函数替换)deprecated 错误问题汇总
php 5.3 从一方面来讲,可以说在07年计划PHP6的中的一个pre版本,增加了很多功能,统一了很多语法,使PHP变得更加强大与简洁。 可是我们在升级使用5.3以后会发现以前的旧项目会出现一些问题,统计架构规划,PHP当然会对一些别名,重复功能function进行归类整理,并把一些不用的正式在php 5.3以后删除掉.故不建议在新项目继续使用. PHP 5.3 有两个deprecated, E_DEPRECATED and E_USER_DEPRECATED 下面是旧的项目中会在php 5.3以后碰到的问题 call_user_method() 可以用 call_user_func() 替代 直接返加new 实例不再建议使用. PHP 6 将不再支持
define_syslog_variables
register_globals
register_long_arrays
safe_mode
magic_quotes_gpc
magic_quotes_runtime
magic_quotes_sybase
在PHP.ini 注释用#已经不再建议使用.
Deprecated functions:
call_user_method_array() 可以用 call_user_func_array() 替代define_syslog_variables()
dl() 反对在使用DL加载扩展,php5.3 以后应用php.ini配制
ereg() 可以用 preg_match() 替代
ereg_replace() 可以用 preg_replace() 替代
eregi() 用 preg_match() i 参数替代
eregi_replace() 用 preg_replace() i 参数替代
set_magic_quotes_runtime() 用 magic_quotes_runtime() 替代
session_register() session_unregister() session_is_registered()
以上三个统一用 $_SESSION 替代
set_socket_blocking() 用 stream_set_blocking() 替代
split() 用 preg_split() 替代
spliti() 用 preg_split() 模式 ‘i’ 替代
sql_regcase()
mysql_db_query() 用 mysql_select_db() mysql_query() 替代mysql_escape_string() 用 use mysql_real_escape_string() 替代
关于时区处理,统一用Timezone对像
Deprecated features:
Call-time pass-by-reference 参数现在不再建议使用 PHP 6 将不再支持
用 {} 访问字符串顺序不再建议使用. 统一用 [] 代替. PHP 6 将不再支持

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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