php安装扩展的几种方法
注意
与Apache+PHP或者Nginx+PHP的运行模式不同,WorkerMan是基于PHP命令行 PHP CLI 运行的,使用的是不同的PHP可执行程序,使用的php.ini文件也可能不同。所以在网页中打印phpinfo()看到安装了某个扩展,不代表命令行的PHP CLI也安装了对应的扩展。
如何确定PHP CLI安装了哪些扩展
运行 php -m 会列出命令行 PHP CLI 已经安装的扩展,结果类似如下:
~# php -m [PHP Modules] libevent posix pcntl ...
如何确定PHP CLI 的php.ini文件的位置
当我们安装扩展时,可能需要手动配置php.ini文件,把扩展加进去,所以要确认PHP CLI的php.ini文件的位置。可以运行php --ini查找PHP CLI的ini文件位置,结果类似如下(各个系统显示结果会有差异):
~# php --ini Configuration File (php.ini) Path: /etc/php5/cli Loaded Configuration File: /etc/php5/cli/php.ini Scan for additional .ini files in: /etc/php5/cli/conf.d Additional .ini files parsed: /etc/php5/cli/conf.d/apc.ini, /etc/php5/cli/conf.d/libevent.ini, /etc/php5/cli/conf.d/memcached.ini, /etc/php5/cli/conf.d/mysql.ini, /etc/php5/cli/conf.d/pdo.ini, /etc/php5/cli/conf.d/pdo_mysql.ini ...
给PHP CLI安装扩展(安装memcached扩展为例)
方法一、使用apt或者yum命令安装
如果PHP是通过 apt 或者 yum 命令安装的,则扩展也可以通过 apt 或者 yum 安装
debian/ubuntu等系统apt安装PHP扩展方法(非root用户需要加sudo命令)
1、利用apt-cache search查找扩展包
~# apt-cache search memcached php php-apc - APC (Alternative PHP Cache) module for PHP 5 php5-memcached - memcached module for php5
2、使用apt-get install安装扩展包
~# apt-get install -y php5-memcached Reading package lists... Done Reading state information... Done ...
centos等系统yum安装PHP扩展方法
1、利用yum search查找扩展包
~# yum search memcached php php-pecl-memcached - memcached module for php5
2、使用yum install安装扩展包
~# yum install -y php-pecl-memcached Reading package lists... Done Reading state information... Done ...
说明:
使用apt或者yum安装PHP扩展会自动配置php.ini文件,安装完直接可用,十分方便。缺点是有些扩展在apt或者yum中没有对应的扩展安装包。
方法二、使用pecl安装
使用pecl install命令安装扩展
1、pecl install安装
~# pecl install memcached downloading memcached-2.2.0.tgz ... Starting to download memcached-2.2.0.tgz (70,449 bytes) ....
2、配置php.ini
通过运行 php --ini查找php.ini文件位置,然后在文件中添加extension=memcached.so
方法三、源码编译安装(一般是安装PHP自带的扩展,以安装pcntl扩展为例)
1、利用php -v命令查看当前的PHP CLI的版本
~# php -v PHP 5.3.29-1~dotdeb.0 with Suhosin-Patch (cli) (built: Aug 14 2014 19:55:20) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2014 Zend Technologies
2、根据版本下载PHP源代码
PHP历史版本下载页面:http://php.net/releases/
3、解压源码压缩包
例如下载的压缩包名称是php-5.3.29.tar.gz
~# tar -zxvf php-5.3.29.tar.gz php-5.3.29/ php-5.3.29/README.WIN32-BUILD-SYSTEM php-5.3.29/netware/ ...
4、进入源码中的ext/pcntl目录
~# cd php-5.3.29/ext/pcntl/
5、运行 phpize 命令
~# phpize Configuring for: PHP Api Version: 20090626 Zend Module Api No: 20090626 Zend Extension Api No: 220090626
6、运行 configure命令
~# ./configure checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E ...
7、运行 make 命令
~# make /bin/bash /tmp/php-5.3.29/ext/pcntl/libtool --mode=compile cc ... -I/usr/include/php5 -I/usr/include/php5/main -I/usr/include/php5/TSRM -I/usr/include/php5/Zend... ...
8、运 行make install 命令
~# make install Installing shared extensions: /usr/lib/php5/20090626/
9、配置ini文件
通过运行 php --ini查找php.ini文件位置,然后在文件中添加extension=pcntl.so
说明: 此方法一般用来安装PHP自带的扩展,例如posix扩展和pcntl扩展。除了用phpize编译某个扩展,也可以重新编译整个PHP,在编译时用参数添加扩展,例如在源码根目录运行
~# ./configure --enable-pcntl --enable-posix ... ~# make && make install
方法四、phpize安装
如果要安装的扩展在php源码ext目录中没有,那么这个扩展需要到http://pecl.php.net 搜索下载
以安装libevent扩展为例(假设系统安装了libevent-dev库)
1、下载libevent扩展文件压缩包(在当前系统哪个目录下载随意)
~# wget http://pecl.php.net/get/libevent-0.1.0.tgz --2015-05-26 21:43:40-- http://pecl.php.net/get/libevent-0.1.0.tgz Resolving pecl.php.net... 104.236.228.160 Connecting to pecl.php.net|104.236.228.160|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 9806 (9.6K) [application/octet-stream] Saving to: “libevent-0.1.0.tgz” 100%[=======================================================>] 9,806 41.4K/s in 0.2s
2、解压扩展文件压缩包
~# tar -zxvf libevent-0.1.0.tgz package.xml libevent-0.1.0/config.m4 libevent-0.1.0/CREDITS libevent-0.1.0/libevent.c ....
3、进入到源码目录
~# cd libevent-0.1.0/
4、运行phpize命令
~# phpize Configuring for: PHP Api Version: 20090626 Zend Module Api No: 20090626 Zend Extension Api No: 220090626
5、运行configure命令
~# ./configure checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for a sed that does not truncate output... /bin/sed checking for cc... cc checking whether the C compiler works... yes ...
6、运行make命令
~# /bin/bash /data/test/libevent-0.1.0/libtool --mode=compile cc -I. -I/data/test/libevent-0.1.0 -DPHP_ATOM_INC -I/data/test/libevent-0.1.0/include ...
7、运行make install命令
~# make install Installing shared extensions: /usr/lib/php5/20090626/
8、配置ini文件
通过运行 php --ini查找php.ini文件位置,然后在文件中添加extension=libevent.so
更多相关知识,请访问 PHP中文网!!

ThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin

You should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.

Yes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching

ThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)

APHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.

Select DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.

PHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi

PHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Dreamweaver Mac version
Visual web development tools

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
