[wp-trac] [WordPress Trac] #56017: Check the required PHP extensions during WordPress installation and updates

[WordPress Trac]

#56017: Check the required PHP extensions during WordPress installation and updates
-----------------------------+---------------------
 Reporter:  SergeyBiryukov   |       Owner:  (none)
     Type:  task (blessed)   |      Status:  new
 Priority:  normal           |   Milestone:  6.1
Component:  Upgrade/Install  |     Version:
 Severity:  normal           |  Resolution:
 Keywords:                   |     Focuses:
-----------------------------+---------------------

Comment (by JavierCasares):

 This has always been a big discussion in the Hosting Team.

 [https://make.wordpress.org/hosting/handbook/server-environment/#php-
 extensions WordPress Handbook PHP extensions]

 Required:

 - [https://www.php.net/manual/en/book.json.php json]
 - [https://www.php.net/manual/en/book.mysqli.php mysqli] /
 [https://www.php.net/manual/en/book.mysqlnd.php mysqlnd]

 Highly recommended:

 - [https://www.php.net/manual/en/book.curl.php curl] – Performs remote
 request operations.
 - [https://www.php.net/manual/en/book.dom.php dom] – Used to validate Text
 Widget content and to automatically configure IIS7+.
 - [https://www.php.net/manual/en/book.exif.php exif] – Works with metadata
 stored in images.
 - [https://www.php.net/manual/en/book.fileinfo.php fileinfo] – Used to
 detect mimetype of file uploads.
 - [https://www.php.net/manual/en/book.hash.php hash] – Used for hashing,
 including passwords and update packages.
 - [https://www.php.net/manual/en/book.imagick.php imagick] – Provides
 better image quality for media uploads. See WP_Image_Editor for details.
 Smarter image resizing (for smaller images) and PDF thumbnail support,
 when Ghost Script is also available.
 - [https://www.php.net/manual/en/book.mbstring.php mbstring] – Used to
 properly handle UTF8 text.
 - [https://www.php.net/manual/en/book.openssl.php openssl] – Permits SSL-
 based connections to other hosts.
 - [https://www.php.net/manual/en/book.pcre.php pcre] – Increases
 performance of pattern matching in code searches.
 - [https://www.php.net/manual/en/book.xml.php xml] – Used for XML parsing,
 such as from a third-party site.
 - [https://www.php.net/manual/en/book.zip.php zip] – Used for
 decompressing Plugins, Themes, and WordPress update packages.

 Fallbacks or optional:

 - [https://www.php.net/manual/en/book.bc.php bc] – For arbitrary precision
 mathematics, which supports numbers of any size and precision up to
 2147483647 decimal digits.
 - [https://www.php.net/manual/en/book.filter.php filter] – Used for
 securely filtering user input.
 - [https://www.php.net/manual/en/book.image.php image] – If Imagick isn’t
 installed, the GD Graphics Library is used as a functionally limited
 fallback for image manipulation.
 - [https://www.php.net/manual/en/book.iconv.php iconv] – Used to convert
 between character sets.
 - [https://www.php.net/manual/en/book.intl.php intl] – Enable to perform
 locale-aware operations including but not limited to formatting,
 transliteration, encoding conversion, calendar operations, conformant
 collation, locating text boundaries and working with locale identifiers,
 timezones and graphemes.
 - [https://www.php.net/manual/en/book.simplexml.php simplexml] – Used for
 XML parsing.
 - [https://www.php.net/manual/en/book.sodium.php sodium] – Validates
 Signatures and provides securely random bytes.
 - [https://www.php.net/manual/en/book.xmlreader.php xmlreader] – Used for
 XML parsing.
 - [https://www.php.net/manual/en/book.zlib.php zlib] – Gzip compression
 and decompression.

 File changes (depends on hosting):

 - [https://www.php.net/manual/en/book.ssh2.php ssh2] – Provide access to
 resources (shell, remote exec, tunneling, file transfer) on a remote
 machine using a secure cryptographic transport.
 - [https://www.php.net/manual/en/book.ftp.php ftp] – Implement client
 access to files servers speaking the File Transfer Protocol (FTP).
 - [https://www.php.net/manual/en/book.sockets.php sockets] – Implements a
 low-level interface to the socket communication functions based on the
 popular BSD sockets.

 And, finally, a recommendation we did some time ago:

 [https://make.wordpress.org/hosting/2021/05/20/why-hosters-should-install-
 the-php-intl-extension/ Why hosters should install the PHP-intl extension]

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/56017#comment:1>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform