<br>function myfun(a,b){
<code>return a+b; }</code>
<code> 这个简单的自定义函数,可否不通过require的方法,将它变成一个系统内部函数? 也就是我进入php -a 后,可以直接输入 echo myfun(3,4); python可以把自定义函数放在一个专门放置系统函数的文件夹内, 这个自定义函数就和语言本身的内置函数一样使用了, php可否做到? @brook我这么做了 vim /etc/php5/apache2/php.ini auto_prehend_file=/tmp/myFun.php vim /etc/php5/cli/php.ini auto_prehend_file=/tmp/myFun.php php -a 可以导入它,但是我正式引用它的时候,报错 php -a</code>
Interactive mode enabled
function myFun(x,y){
<code>return x+y;</code>
}
php > echo myFun(3,5);
PHP Fatal error: Call to undefined function myFun() in php shell code on line 1
回复内容:
<br>function myfun(a,b){
<code>return a+b; }</code>
<code> 这个简单的自定义函数,可否不通过require的方法,将它变成一个系统内部函数? 也就是我进入php -a 后,可以直接输入 echo myfun(3,4); python可以把自定义函数放在一个专门放置系统函数的文件夹内, 这个自定义函数就和语言本身的内置函数一样使用了, php可否做到? @brook我这么做了 vim /etc/php5/apache2/php.ini auto_prehend_file=/tmp/myFun.php vim /etc/php5/cli/php.ini auto_prehend_file=/tmp/myFun.php php -a 可以导入它,但是我正式引用它的时候,报错 php -a</code>
Interactive mode enabled
function myFun(x,y){
<code>return x+y;</code>
}
php > echo myFun(3,5);
PHP Fatal error: Call to undefined function myFun() in php shell code on line 1
Add auto_prepend_file = /path/to/you/myFun.php
to your php.ini file;
PS: php -a
和网页里用的不同的 php.ini,在网页里输出 phpinfo()
查看正在使用的是 php.ini 路径,添加上面的一句就行了
当然可以啦。你创建一个公共php文件,里面定义n个方法,引用好之后,掉用任意一个都可以这么写的。你可以参考tp框架里面有个common.php或者function.php方法文件。就是这么用的
专门准备一个php文件全部放这样的全局函数,
框架文件的头部
require_once
这个全局函数文件(比较灵活,且只对当前项目影响),楼上的做法也是可以的,但除非你是一些方法每个项目都需要, 否则不推荐,并且这个文件也不建议放在项目文件夹下.
两个错误
vim /etc/php5/cli/php.ini
auto_prepend_file=/tmp/myFun.php
vim /tmp/myFun.php
function myfun($a,$b){
return $a+$b;
}
mgajnpwmdgw

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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