search
HomeBackend DevelopmentPHP TutorialDetailed explanation of the installation and use of eAccelerator_PHP tutorial

1. PHPeAccelerator installation
Go to https://github.com/eaccelerator/eaccelerator/downloads to download the latest version of the installation package, unzip the installation package, and enter the decompressed Folder directory,

Compile:

Copy code The code is as follows:

$PHP_PREFIX/bin/phpize
./configure--enable-shared --with-php-config=$PHP_PREFIX/bin/php-config
make

Installation:
Copy the code The code is as follows:

makeinstall

Modify php.ini:
Copy code The code is as follows:

extension="eaccelerator.so"
eaccelerator.shm_size="16"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug=" 0"
eaccelerator.filter=""
eaccelerator.shm_ttl="0"
eaccelerator.shm_prune_period="0"
eaccelerator.shm_only="0"

Create a new cache directory:
Copy the code The code is as follows:

mkdir/tmp/eaccelerator
chmod0777 /tmp/eaccelerator

二、PHPeAccelerator配置选项
eaccelerator.shm_size
用来设置分配给eAccelerator用来缓存php的最大共享内存,单位是mb,如果设置为0,就使用默认大小。在linux系统中一个process能分配的最大内存是由/proc/sys/kernel/shmmax限制的,所以如果eA设置的内存超出了这个值,eA在初始化的时候会失败。shmmax的单位是字节(bytes

eaccelerator.cache_dir
用来设置硬盘缓存目录。eA用来存放预编译代码,session数据,内容和用户入口。默认值是"/tmp/eaccelerator"

eaccelerator.enable
用来设置是否启用或禁用eAccelerator,设置1为启用,设置0为禁用。

eaccelerator.optimizer
开启或关闭优化,用户加速代码的执行。1为开启,0为关闭,优化仅仅在脚本被编译时候发生并且是在被缓存之前。

eaccelerator.debug
开启关闭debug日志。如果设置为1,将打印很多文件命中的信息到日志中。这个在排查eAccelerator的时候很有用。

eaccelerator.check_mtime
在每次命中的时候Eaccelerator都会检查脚本的修改时间来判断是不是脚本发生的变化来决定是否需要重新编译。尽管检查比打开文件并编译要快,但仍然会带来一些开销的,因为每次都会有状态调用要完成。这个配置可以关闭这个检查。不过关闭检查带来的不利就是每次更新了文件需要认为手动的清除cache。默认检查是启用的,1是启用,0是禁用。

eaccelerator.filter
is used to determine which php file is cached. You can match php scripts that need to be cached by using wildcards (such as "*.php*.phtml"). If it starts with "!", it means there is no match. This parameter is empty by default and can cache all compiled php script needs Note that eaccelerator.filter does not work based on URL, but based on the absolute path of the file, such as defining "!/home", then all scripts in the /home directory will not be cached. If you want to define multiple matches, separate them with spaces or tabs, not commas.

eaccelerator.shm_ttl
When eAcelerator has no free shared memory, Scripts that have not been accessed for at least shm_ttl seconds will be released from the cache. The default value is 0, which means eA will not release any cache.

eaccelerator.shm_prune_period
When there is not enough memory for caching, eA Will try to clear the expired script again when the last time the cache was cleared exceeds the number of seconds set by shm_prune_period. The default value is 0, eA will not clear expired scripts from cache.

eaccelerator.shm_only
Enable or disable disk cache. This option has no effect on caching of session data and content. The default value is 0, allowing eA to use disk and memory for caching.

eaccelerator.allowed_admin_path
Enable or disable disk cache. This option has no effect on caching of session data and content. The default value is 0, allowing eA to use disk and memory for caching.

3. PHPeAccelerator monitoring and management
eAccelerator provides control.php for monitoring and managing eAccelerator cache. Place control.php in the website directory, modify the account number and password, and then you can monitor and manage the eAccelerator cache through the browser.
Lines 23 and 24 of control.php:

Copy code The code is as follows:

$user= "admin";
$pw= "password";

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/327573.htmlTechArticle1. To install PHPeAccelerator, go to https://github.com/eaccelerator/eaccelerator/downloads to download the latest version of the installation package. Unzip the installation package, enter the unzipped folder directory, compile: Copy...
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How can you check if a PHP session has already started?How can you check if a PHP session has already started?Apr 30, 2025 am 12:20 AM

In PHP, you can use session_status() or session_id() to check whether the session has started. 1) Use the session_status() function. If PHP_SESSION_ACTIVE is returned, the session has been started. 2) Use the session_id() function, if a non-empty string is returned, the session has been started. Both methods can effectively check the session state, and choosing which method to use depends on the PHP version and personal preferences.

Describe a scenario where using sessions is essential in a web application.Describe a scenario where using sessions is essential in a web application.Apr 30, 2025 am 12:16 AM

Sessionsarevitalinwebapplications,especiallyfore-commerceplatforms.Theymaintainuserdataacrossrequests,crucialforshoppingcarts,authentication,andpersonalization.InFlask,sessionscanbeimplementedusingsimplecodetomanageuserloginsanddatapersistence.

How can you manage concurrent session access in PHP?How can you manage concurrent session access in PHP?Apr 30, 2025 am 12:11 AM

Managing concurrent session access in PHP can be done by the following methods: 1. Use the database to store session data, 2. Use Redis or Memcached, 3. Implement a session locking strategy. These methods help ensure data consistency and improve concurrency performance.

What are the limitations of using PHP sessions?What are the limitations of using PHP sessions?Apr 30, 2025 am 12:04 AM

PHPsessionshaveseverallimitations:1)Storageconstraintscanleadtoperformanceissues;2)Securityvulnerabilitieslikesessionfixationattacksexist;3)Scalabilityischallengingduetoserver-specificstorage;4)Sessionexpirationmanagementcanbeproblematic;5)Datapersis

Explain how load balancing affects session management and how to address it.Explain how load balancing affects session management and how to address it.Apr 29, 2025 am 12:42 AM

Load balancing affects session management, but can be resolved with session replication, session stickiness, and centralized session storage. 1. Session Replication Copy session data between servers. 2. Session stickiness directs user requests to the same server. 3. Centralized session storage uses independent servers such as Redis to store session data to ensure data sharing.

Explain the concept of session locking.Explain the concept of session locking.Apr 29, 2025 am 12:39 AM

Sessionlockingisatechniqueusedtoensureauser'ssessionremainsexclusivetooneuseratatime.Itiscrucialforpreventingdatacorruptionandsecuritybreachesinmulti-userapplications.Sessionlockingisimplementedusingserver-sidelockingmechanisms,suchasReentrantLockinJ

Are there any alternatives to PHP sessions?Are there any alternatives to PHP sessions?Apr 29, 2025 am 12:36 AM

Alternatives to PHP sessions include Cookies, Token-based Authentication, Database-based Sessions, and Redis/Memcached. 1.Cookies manage sessions by storing data on the client, which is simple but low in security. 2.Token-based Authentication uses tokens to verify users, which is highly secure but requires additional logic. 3.Database-basedSessions stores data in the database, which has good scalability but may affect performance. 4. Redis/Memcached uses distributed cache to improve performance and scalability, but requires additional matching

Define the term 'session hijacking' in the context of PHP.Define the term 'session hijacking' in the context of PHP.Apr 29, 2025 am 12:33 AM

Sessionhijacking refers to an attacker impersonating a user by obtaining the user's sessionID. Prevention methods include: 1) encrypting communication using HTTPS; 2) verifying the source of the sessionID; 3) using a secure sessionID generation algorithm; 4) regularly updating the sessionID.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

Safe Exam Browser

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.