发现我的本地phpStudy集成环境PHP5.3.26可以在第二个参数传入一个匿名函数,但是部署到公司内网的测试linux主机上使用php5.3.27运行就不支持,要传一个函数名的字符串进去让它执行才可以,请问到底怎样设置才能使它支持匿名函数呢?
回复讨论(解决方案)
5.3 开始可以使用匿名函数了,应该没有问题。建议贴出代码和错误信息以供分析。
$arr = array(1,2,3,4,5);
array_walk_recursive($arr, function($value){
echo $value;
});
E_WARNING, array_walk_recursive() expects parameter 2 to be a valid callback, no array or string given
============
除非定义这个函数,然后以字符串方式传入函数名称
你的php版本多少,echo phpversion(); 看看。
好像不支持这种写法
你的php版本多少,echo phpversion(); 看看。
5.3.27
==========
好像不支持这种写法
我phpstudy的5.3.26的可以
这有什么?
5.3.26的可以,5.3.27的不可以,5.3.29的又可以
显然是版本维护中出现的失误,换个版本就是了
按照版本维护的一般规律,小版本号是偶数的,稳定性较高
现在 5.5 都正式发行了,还纠结于那些低版本中干什么?

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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