这个问题的答案可能很复杂，而且很长，据我所知，服务器和；操作系统（IIS、Apache）。。我不能说下面的列表是一个完整的列表，但它包括了我知道需要的一些列表：

• Curl and CurlSSL – 不确定它是否是必需的，但如果可用的话，大部分WordPress代码都会使用它。然而，许多插件确实需要it，并且/或者如果没有它，其功能将有限。

• Exif – 允许WordPress的媒体处理程序从图像中提取Exif数据。

• Gettext - .采购订单。mo处理翻译本地化国际化。。

• FTP – 用于通过FTP进行插件和WordPress升级。

• GD – 不需要介绍，对吧？。

• Iconv – 从邮件到RSS解析的所有字符集转换。

• Mbregex and Mbstring – 这个名字很有描述性-提供到处使用的函数：-）

• Mcrypt – wordpress不需要它，但许多插件确实需要它。

• Mime Magic – 现已在wordpress中弃用，但对于后端兼容性仍然很好。

  系统的Mysql和Mysql–我们都知道这是什么以及为什么需要它，不是吗？

• Openssl – 此库用于处理使用SSL证书加密的连接，以便WordPress能够连接到任何SSL（https）加密位置。

• POSIX – 用于确保WordPress正确维护文件权限和所有权。

• Path Info Check – 一些permalink设置。

• Pspell – TinyMCE的拼写检查功能。

• Sockets – 管理FTP连接和邮件处理，即SMTP和弹出式WordPress。

• Zip – 不确定是否需要-但此跨平台兼容的zip文件创建和提取类将由wordpress使用（如果可用）。

• Zlib – 在许多情况下使用。示例-js和css文件压缩。同样，不确定是否需要，但是否需要。

作为旁注，我还想说，这个问题可能会在serverfault上得到更多正确/更新的答案。com比此处。。。

(This is not intended to be an answer. Just some useful information. 如果您认为此信息没有什么用处，请告诉我，我会将其删除。）

我认为对于新手来说，谈论软件包会更容易，但由于软件包因系统而异，很难涵盖所有软件包。

由于我有使用Debian（基于Debian的发行版）的经验，我想分享以下具体信息：

php5-cli-php5-dev-php5-fpm-php5-cgi-php5-mysql p5 pspell前面提到的包安装了其他答案中提到的所有扩展/库/模块；all, except Mime Magic, which is no longer required by WordPress.

确保服务器与WordPress完全兼容的另一个好方法是检查托管公司预装的软件包。由于他们有多年的客户投诉不兼容的经验，他们会知道得更好。

In case of Hostgator, 他们预安装的PHP模块包括（您可能只需要大部分，但不是全部）：

Media Temple提供phpinfo(); 文件以检查其配置。这对于比较也很有用。

如果您想要一种简单的方法来验证您的服务器是否满足这些要求，现在有一个方便的WP-CLI ext command 这样做。

wp ext required 显示运行WordPress所需的所有PHP扩展，而wp ext recommended 显示可选的。wp ext check 是两个命令的组合。

当您需要快速检查新服务器上的系统需求和/或希望以编程方式进一步处理此列表时，这些方法非常有用。

以下是方法wp ext required 工程：

$ wp ext required
+-----------+-----------+
| extension | installed |
+-----------+-----------+
| curl      | 1         |
| date      | 1         |
| dom       | 1         |
| filter    | 1         |
| ftp       | 1         |
| gd        | 1         |
| hash      | 1         |
| iconv     | 1         |
| json      | 1         |
| libxml    | 1         |
| mbstring  | 1         |
| mysqli    | 1         |
| openssl   | 1         |
| pcre      | 1         |
| posix     | 1         |
| SimpleXML | 1         |
| sockets   | 1         |
| SPL       | 1         |
| tokenizer | 1         |
| xml       | 1         |
| xmlreader | 1         |
| zlib      | 1         |
+-----------+-----------+
Success: All required extensions are installed

我已经开发了WordPress环境检查器。它是一个简单的类，在web SAPI或CLI上运行。这是维护版本https://github.com/szepeviktor/debian-server-tools/blob/master/webserver/php-env-check.php

<?php
/**
 * Check PHP environment.
 *
 * Usage through a webserver
 *     wget -q -O - "https://example.com/php-env-check.php"; echo
 * Usage on CLI
 *     php /path/to/php-env-check.php
 *
 * @package php-env-check
 * @version 0.2.0
 * @author Viktor Szépe <[email protected]>
 */

namespace O1;

// Local access only
if ( php_sapi_name() !== \'cli\' && $_SERVER[\'REMOTE_ADDR\'] !== $_SERVER[\'SERVER_ADDR\'] ) {
    header( \'Status: 403 Forbidden\' );
    header( \'HTTP/1.1 403 Forbidden\', true, 403 );
    header( \'Connection: Close\' );
    exit;
}

// Remove cached version of this file
if ( function_exists( \'opcache_invalidate\' ) ) {
    opcache_invalidate( __FILE__ );
}

// Check environment
$check = new Check_Env();
$status = empty( $check->errors );

// Display report and exit
print json_encode( $check->errors );
exit( $status ? 0 : 1 );

/**
 * Check PHP configuration.
 */
final class Check_Env {

    /**
     * List of errors.
     */
    public $errors = array();

    /**
     * Run the checks.
     *
     * @param void
     */
    public function __construct() {

        // Extensions for WordPress on PHP 7.0
        // http://wordpress.stackexchange.com/a/42212

        // Engine version
        $this->assert( \'php\', 70013, PHP_VERSION_ID );

        // Core directives
        $this->assert_directive( \'expose_php\', \'\' );
        $this->assert_directive( \'allow_url_fopen\', \'\' );
        $this->assert_directive( \'mail.add_x_header\', \'\' );
        $this->assert_directive( \'realpath_cache_size\', \'64k\' );
        $this->assert_directive( \'max_execution_time\', \'30\' );
        $this->assert_directive( \'memory_limit\', \'128M\' );
        $this->assert_directive( \'max_input_vars\', \'1000\' );
        $this->assert_directive( \'post_max_size\', \'4M\' );
        $this->assert_directive( \'upload_max_filesize\', \'4M\' );

        // Compiled in Extensions
        // php -n -m | paste -s -d " "
        // Core date filter hash libxml openssl pcntl pcre Reflection session SPL standard zlib
        $this->assert_extension( \'date\' );
        $this->assert_directive( \'date.timezone\', \'Europe/Budapest\' );
        $this->assert_extension( \'filter\' );
        $this->assert_extension( \'hash\' );
        $this->assert_extension( \'openssl\' );
        $this->assert_extension( \'pcre\' );
        $this->assert_extension( \'SPL\' );
        $this->assert_extension( \'zlib\' );

        // Common Extensions
        // dpkg -L php7.0-common | sed -n -e \'s|^/usr/lib/php/\\S\\+/\\(\\S\\+\\)\\.so$|\\1|p\' | paste -s -d " "
        // ctype iconv gettext tokenizer sockets pdo sysvsem fileinfo posix exif sysvmsg phar ftp calendar sysvshm shmop
        $this->assert_extension( \'ctype\' ); // wp-includes/ID3/getid3.lib.php
        $this->assert_extension( \'posix\' );
        $this->assert_extension( \'exif\' ); // wp-admin/includes/image.php
        $this->assert_extension( \'ftp\' );
        $this->assert_extension( \'gettext\' ); // _()
        $this->assert_extension( \'iconv\' );
        $this->assert_extension( \'mbstring\' );
        $this->assert_extension( \'sockets\' );
        $this->assert_extension( \'tokenizer\' );

        // php7.0-json
        $this->assert_extension( \'json\' );
        // php7.0-intl
        $this->assert_extension( \'intl\' );
        // php7.0-xml
        // wddx xml simplexml xmlwriter xmlreader dom xsl
        $this->assert_extension( \'xml\' );
        $this->assert_extension( \'SimpleXML\' );
        $this->assert_extension( \'xmlreader\' );
        $this->assert_extension( \'dom\' );
        // php7.0-curl
        $this->assert_extension( \'curl\' );
        // php7.0-gd
        $this->assert_extension( \'gd\' );
        // php7.0-mysql
        // mysqlnd mysqli pdo_mysql
        // WP_USE_EXT_MYSQL will use mysqli through mysqlnd (no PDO)
        $this->assert_extension( \'mysqlnd\' );
        $this->assert_extension( \'mysqli\' );
        // php7.0-opcache
        $this->assert_extension( \'Zend OPcache\', \'ext.opcache\' );
        $this->assert_directive( \'opcache.restrict_api\', \'/home/prg123\' );
        $this->assert_directive( \'opcache.memory_consumption\', \'256\' );
        $this->assert_directive( \'opcache.interned_strings_buffer\', \'16\' );
        $this->assert_directive( \'opcache.max_accelerated_files\', \'10000\' );

        // Deprecated Extensions
        $this->assert_disabled_extension( \'mcrypt\' );
        $this->assert_disabled_extension( \'mysql\' );

        // Disabled Extensions
        // calendar fileinfo pcntl PDO pdo_mysql Phar readline
        // shmop sysvmsg(System V messages) sysvsem(System V semaphore) sysvshm(System V shared memory) wddx xmlwriter xsl

        $this->assert_disabled_extension( \'calendar\' );
        $this->assert_disabled_extension( \'fileinfo\' );
        $this->assert_disabled_extension( \'pcntl\' );
        $this->assert_disabled_extension( \'PDO\' );
        $this->assert_disabled_extension( \'pdo_mysql\' );
        $this->assert_disabled_extension( \'Phar\' );
        $this->assert_disabled_extension( \'readline\' );
        $this->assert_disabled_extension( \'shmop\' );
        $this->assert_disabled_extension( \'sysvmsg\' );
        $this->assert_disabled_extension( \'sysvsem\' );
        $this->assert_disabled_extension( \'sysvshm\' );
        $this->assert_disabled_extension( \'wddx\' );
        $this->assert_disabled_extension( \'xmlwriter\' );
        $this->assert_disabled_extension( \'xsl\' );
        // php7.0-sqlite3
        // pdo_sqlite sqlite3
        $this->assert_disabled_extension( \'pdo_sqlite\' );
        $this->assert_disabled_extension( \'sqlite3\' );

        // 3rd-party Extensions

        // php7.0-redis
        $this->assert_extension( \'igbinary\' );
        $this->assert_extension( \'redis\' );

        // Not for WordPress

        // Session
        $this->assert_directive( \'session.gc_maxlifetime\', \'1440\' );
    }

    /**
     * Simple assert.
     *
     * @param $id string       Assert ID
     * @param $expected string Expected value
     * @param $result string   Current value
     */
    private function assert( $id, $expected, $result ) {

        if ( $expected !== $result ) {
            $this->errors[ $id ] = $result;
        }
    }

    /**
     * Assert for a PHP extension.
     *
     * @param $extension_name string Extension name
     * @param $id string             Optional assert ID
     */
    private function assert_extension( $extension_name, $id = \'\' ) {

        // Automatic ID
        if ( \'\' === $id ) {
            $id = \'ext.\' . $extension_name;
        }
        $this->assert( $id, true, extension_loaded( $extension_name ) );
    }

    /**
     * Negative assert for a PHP extension.
     *
     * @param $extension_name string Extension name
     * @param $id string             Optional assert ID
     */
    private function assert_disabled_extension( $extension_name, $id = \'\' ) {

        // Automatic ID
        if ( \'\' === $id ) {
            $id = \'!ext.\' . $extension_name;
        }
        $this->assert( $id, false, extension_loaded( $extension_name ) );
    }

    /**
     * Assert for a PHP directive.
     *
     * @param $directive_name string Directive name
     * @param $expected string       Expected value
     * @param $id string             Optional assert ID
     */
    private function assert_directive( $directive_name, $expected, $id = \'\' ) {

        // Automatic ID
        if ( \'\' === $id ) {
            $id = $directive_name;
        }
        $this->assert( $id, $expected, ini_get( $directive_name ) );
    }
}

这个WordPress handbook 现在列出了推荐的PHP模块：

WordPress core使用PHP扩展。如果首选扩展丢失，WordPress将不得不做更多的工作来完成模块帮助完成的任务，或者在最坏的情况下，将删除功能。因此，建议使用下面列出的PHP扩展。

curl–执行远程请求操作

值得一提的是，自WordPress 5.2以来，有一个内置功能可以报告缺失的模块。在“工具”>“站点运行状况”中找到它。

在Debian上安装PHP for Wordpress时的一个小“备忘”：

0. Add the dotdeb repository

deb http://packages.dotdeb.org jessie all
deb-src http://packages.dotdeb.org jessie all

wget https://www.dotdeb.org/dotdeb.gpg
sudo apt-key add dotdeb.gpg

sudo apt-get update

1. Install PHP 7:

apt-get install php7.0-common libapache2-mod-php7.0 php7.0-cli

2. List of modules, which are included in the "php7.0-common" package:

/usr/lib/php/20151012/calendar.so
/usr/lib/php/20151012/ctype.so
/usr/lib/php/20151012/exif.so
/usr/lib/php/20151012/fileinfo.so
/usr/lib/php/20151012/ftp.so
/usr/lib/php/20151012/gettext.so
/usr/lib/php/20151012/iconv.so
/usr/lib/php/20151012/pdo.so
/usr/lib/php/20151012/phar.so
/usr/lib/php/20151012/posix.so
/usr/lib/php/20151012/shmop.so
/usr/lib/php/20151012/sockets.so
/usr/lib/php/20151012/sysvmsg.so
/usr/lib/php/20151012/sysvsem.so
/usr/lib/php/20151012/sysvshm.so
/usr/lib/php/20151012/tokenizer.so

3. To install the additional modules which are required/recommended by wordpress:

apt-get install php7.0-curl php7.0-gd php7.0-mbstring php7.0-mcrypt php7.0-pspell php7.0-zip

4. I couldn\'t find the following on debian:

Openssl
Path Info Check
Zlib

5. "apt-cache search php7" returns:

php7.0 - server-side, HTML-embedded scripting language (metapackage)
php7.0-apcu - APC User Cache for PHP
php7.0-apcu-bc - APCu Backwards Compatibility Module
php7.0-bcmath - Bcmath module for PHP
php7.0-bz2 - bzip2 module for PHP
php7.0-cgi - server-side, HTML-embedded scripting language (CGI binary)
php7.0-cli - command-line interpreter for the PHP scripting language
php7.0-common - documentation, examples and common module for PHP
php7.0-curl - CURL module for PHP
php7.0-dba - DBA module for PHP
php7.0-dbg - Debug symbols for PHP7.0
php7.0-dev - Files for PHP7.0 module development
php7.0-enchant - Enchant module for PHP
php7.0-fpm - server-side, HTML-embedded scripting language (FPM-CGI binary)
php7.0-gd - GD module for PHP
php7.0-geoip - GeoIP module for PHP
php7.0-gmp - GMP module for PHP
php7.0-igbinary - igbinary serializer for PHP
php7.0-imagick - Provides a wrapper to the ImageMagick library
php7.0-imap - IMAP module for PHP
php7.0-interbase - Interbase module for PHP
php7.0-intl - Internationalisation module for PHP
php7.0-json - JSON module for PHP
php7.0-ldap - LDAP module for PHP
php7.0-mbstring - MBSTRING module for PHP
php7.0-mcrypt - libmcrypt module for PHP
php7.0-memcached - memcached extension module for PHP, uses libmemcached
php7.0-mongodb - MongoDB driver for PHP
php7.0-msgpack - MessagePack serializer for PHP
php7.0-mysql - MySQL module for PHP
php7.0-odbc - ODBC module for PHP
php7.0-opcache - Zend OpCache module for PHP
php7.0-pgsql - PostgreSQL module for PHP
php7.0-phpdbg - server-side, HTML-embedded scripting language (PHPDBG binary)
php7.0-pspell - pspell module for PHP
php7.0-readline - readline module for PHP
php7.0-recode - recode module for PHP
php7.0-redis - PHP extension for interfacing with Redis
php7.0-snmp - SNMP module for PHP
php7.0-soap - SOAP module for PHP
php7.0-sqlite3 - SQLite3 module for PHP
php7.0-ssh2 - Bindings for the libssh2 library
php7.0-sybase - Sybase module for PHP
php7.0-tidy - tidy module for PHP
php7.0-xdebug - Xdebug Module for PHP
php7.0-xml - DOM, SimpleXML, WDDX, XML, and XSL module for PHP
php7.0-xmlrpc - XMLRPC-EPI module for PHP
php7.0-xsl - XSL module for PHP (dummy)
php7.0-zip - Zip module for PHP

您需要mysqli、pdo和gd扩展。有时还有xml rpc。

我已经用mysqlnd本机扩展运行WP有一段时间了，它非常整洁。有内置的反射功能，所以如果您想查看该特定请求中db的情况，可以这样做。

zip不需要扩展，大多数程序调用系统zip可执行文件。

正式地WordPress.org 表示自WP Core 5.3+起，在使用推荐的PHP版本（当前为PHP 7.2）时，只需要以下PHP扩展：

curl -- Performs remote request operations.
dom -- Used to validate Text Widget content and to automatically configuring IIS7+.
exif -- Works with metadata stored in images.
fileinfo -- Used to detect mimetype of file uploads.
hash -- Used for hashing, including passwords and update packages.
json -- Used for communications with other servers.
mbstring -- Used to properly handle UTF8 text.
mysqli -- Connects to MySQL for database interactions.
libsodium -- Validates Signatures and provides securely random bytes.
openssl -- Permits SSL-based connections to other hosts.
pcre -- Increases performance of pattern matching in code searches.
imagick -- Provides better image quality for media uploads. See WP_Image_Editor is incoming! for details. Smarter image resizing (for smaller images) and PDF thumbnail support, when Ghost Script is also available.
xml -- Used for XML parsing, such as from a third-party site.
zip -- Used for decompressing Plugins, Themes, and WordPress update packages.

filter -- Used for securely filtering user input.
gd -- If Imagick isn’t installed, the GD Graphics Library is used as a functionally 
limited fallback for image manipulation.
iconv -- Used to convert between character sets.
mcrypt -- Generates random bytes when libsodium and /dev/urandom aren’t available.
simplexml -- Used for XML parsing.
xmlreader -- Used for XML parsing.
zlib -- Gzip compression and decompression.

此外，还有一些其他扩展，如bcmath WordPress没有正式要求或推荐，但许多流行插件仍在使用，如Yoast SEO。

你可以按照我们的list of WordPress PHP extensions 如果有兴趣的话就去小比兹。