问题:
由于开启了 xdebug 扩展, 导致使用 composer 时提示:
<code>You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug </code>
所以想在 cli 下不再加载 xdebug
环境:
linux 为 archlinux
php 通过 pacman 安装, 版本 7.0.1
web服务通过 php-fpm 运行
配置文件分布:
<code>/etc/php ├── conf.d │ └── xdebug.ini ├── fpm.d ├── pear.conf ├── php-fpm.conf ├── php-fpm.d │ └── www.conf ├── php.ini └── php.ini.pacnew </code>
对比 ubuntu 下 通过 apt 安装的 php 配置文件分布:
<code>/etc/php5/ ├── cli │ ├── conf.d │ └── php.ini ├── fpm │ ├── conf.d │ │ ├── 20-xdebug.ini -> ../../mods-available/xdebug.ini │ ├── php-fpm.conf │ ├── php.ini │ └── pool.d │ └── www.conf └── mods-available └── xdebug.ini </code>
---update ---
https://launchpadlibrarian.net/92790964/buildlog_ubuntu-hardy-amd64.php5_5.2.4-2ubuntu5.23_BUILDING.txt.gz
https://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/php
在不自行编译安装,重新指定各项config参数
的情况下, 也只好手动指定 php.ini 运行了
回复内容:
问题:
由于开启了 xdebug 扩展, 导致使用 composer 时提示:
<code>You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug </code>
所以想在 cli 下不再加载 xdebug
环境:
linux 为 archlinux
php 通过 pacman 安装, 版本 7.0.1
web服务通过 php-fpm 运行
配置文件分布:
<code>/etc/php ├── conf.d │ └── xdebug.ini ├── fpm.d ├── pear.conf ├── php-fpm.conf ├── php-fpm.d │ └── www.conf ├── php.ini └── php.ini.pacnew </code>
对比 ubuntu 下 通过 apt 安装的 php 配置文件分布:
<code>/etc/php5/ ├── cli │ ├── conf.d │ └── php.ini ├── fpm │ ├── conf.d │ │ ├── 20-xdebug.ini -> ../../mods-available/xdebug.ini │ ├── php-fpm.conf │ ├── php.ini │ └── pool.d │ └── www.conf └── mods-available └── xdebug.ini </code>
---update ---
https://launchpadlibrarian.net/92790964/buildlog_ubuntu-hardy-amd64.php5_5.2.4-2ubuntu5.23_BUILDING.txt.gz
https://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/php
在不自行编译安装,重新指定各项config参数
的情况下, 也只好手动指定 php.ini 运行了
使用两个不同的 php.ini 配置文件配置不同的运行参数(包括扩展参数),在开启 cli 或者 fpm 时,通过 -c 参数指定运行所使用的 php.ini 即可。
PHP和PHP-FPM都可以用参数-c指定php.ini配置文件.
执行下列命令可见:
<code>strace -f -o strace.log \ /png/php/5.4.45/bin/php -v && \ cat strace.log|egrep 'open|read'|grep 'ini' 3080 open("/png/php/5.4.45/bin/php-cli.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3080 open("/png/php/5.4.45/lib/php-cli.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3080 open("/png/php/5.4.45/bin/php.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3080 open("/png/php/5.4.45/lib/php.ini", O_RDONLY) = 3 </code>
PHP会优先读取php程序所在目录下的php-cli.ini,访问到则不再读取其他ini文件.
PHP-FPM情况如下:
<code>strace -f -o strace.log \ /png/php/5.4.45/sbin/php-fpm -v && \ cat strace.log|egrep 'open|read'|grep 'ini' 3537 open("/png/php/5.4.45/lib/php-fpm-fcgi.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3537 open("/png/php/5.4.45/lib/php.ini", O_RDONLY) = 3 </code>
PHP-CGI情况如下:
<code>strace -f -o strace.log \ /png/php/5.4.45/bin/php-cgi -v && \ cat strace.log|egrep 'open|read'|grep 'ini' 3568 open("./php-cgi-fcgi.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3568 open("/png/php/5.4.45/bin/php-cgi-fcgi.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3568 open("/png/php/5.4.45/lib/php-cgi-fcgi.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3568 open("./php.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3568 open("/png/php/5.4.45/bin/php.ini", O_RDONLY) = -1 ENOENT (No such file or directory) 3568 open("/png/php/5.4.45/lib/php.ini", O_RDONLY) = 3 </code>
可以把cli目录下的conf.d 的20-xdebug.ini 设置为禁用应该就可以了

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

The reasons why PHP is the preferred technology stack for many websites include its ease of use, strong community support, and widespread use. 1) Easy to learn and use, suitable for beginners. 2) Have a huge developer community and rich resources. 3) Widely used in WordPress, Drupal and other platforms. 4) Integrate tightly with web servers to simplify development deployment.

PHP remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.


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