为什么不能获取PHP表单变量的
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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Explain the match expression (PHP 8 ) and how it differs from switch.
Apr 06, 2025 am 12:03 AM
In PHP8, match expressions are a new control structure that returns different results based on the value of the expression. 1) It is similar to a switch statement, but returns a value instead of an execution statement block. 2) The match expression is strictly compared (===), which improves security. 3) It avoids possible break omissions in switch statements and enhances the simplicity and readability of the code.
Does H5 page production require continuous maintenance?
Apr 05, 2025 pm 11:27 PM
The H5 page needs to be maintained continuously, because of factors such as code vulnerabilities, browser compatibility, performance optimization, security updates and user experience improvements. Effective maintenance methods include establishing a complete testing system, using version control tools, regularly monitoring page performance, collecting user feedback and formulating maintenance plans.
Describe the purpose and usage of the ... (splat) operator in PHP function arguments and array unpacking.
Apr 06, 2025 am 12:07 AM
The... (splat) operator in PHP is used to unpack function parameters and arrays, improving code simplicity and efficiency. 1) Function parameter unpacking: Pass the array element as a parameter to the function. 2) Array unpacking: Unpack an array into another array or as a function parameter.
What is Cross-Site Request Forgery (CSRF) and how do you implement CSRF protection in PHP?
Apr 07, 2025 am 12:02 AM
In PHP, you can effectively prevent CSRF attacks by using unpredictable tokens. Specific methods include: 1. Generate and embed CSRF tokens in the form; 2. Verify the validity of the token when processing the request.
What are the advantages of H5 page production
Apr 05, 2025 pm 11:48 PM
The advantages of H5 page production include: lightweight experience, fast loading speed, and improving user retention. Cross-platform compatibility, no need to adapt to different platforms, improving development efficiency. Flexibility and dynamic updates, no audit required, making it easier to modify and update content. Cost-effective, lower development costs than native apps.
Why are the purple slashed areas in the Flex layout mistakenly considered 'overflow space'?
Apr 05, 2025 pm 05:51 PM
Questions about purple slash areas in Flex layouts When using Flex layouts, you may encounter some confusing phenomena, such as in the developer tools (d...
Why does a specific div element in the Edge browser not display? How to solve this problem?
Apr 05, 2025 pm 08:21 PM
How to solve the display problem caused by user agent style sheets? When using the Edge browser, a div element in the project cannot be displayed. After checking, I posted...
Can JS run without H5?
Apr 06, 2025 am 09:06 AM
Is JavaScript available to run without HTML5? The JavaScript engine itself can run independently. Running JavaScript in a browser environment depends on HTML5 because it provides the standardized environment required to load and execute code. The APIs and features provided by HTML5 are crucial to modern JavaScript frameworks and libraries. Without HTML5 environments, many JavaScript features are difficult to implement or cannot be implemented.
