php

USE flags

• acl - Add support for Access Control Lists
• apache2 - Add Apache2 support
• argon2 - Enable password hashing algorithm from app-crypt/argon2
• bcmath - Add support for libbcmath
• berkdb - Add support for sys-libs/db (Berkeley DB for MySQL)
• bzip2 - Use the bzlib compression library
• calendar - Add support for calendars (not using mcal!)
• cdb - Add support for the CDB database engine from the author of qmail
• cgi - Add CGI script support
• cjk - Add support for Multi-byte character languages (Chinese, Japanese, Korean)
• cli - Enable CLI SAPI
• coverage - Include gcov symbols for test coverage and lcov reports. Only useful for extension developers, and requires GCC.
• crypt - Add support for encryption -- using mcrypt or gpg where applicable
• ctype - Enable ctype functions
• curl - Add support for client-side URL transfer library
• debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
• doc - Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
• embed - Enable embed SAPI
• enchant - Add supports Enchant spelling library.
• exif - Add support for reading EXIF headers from JPEG and TIFF images
• ffi - Add foreign function interface (ffi extension) support
• fileinfo - Add fileinfo extension support
• filter - Add filter extension support
• firebird - Add support for the Firebird relational database
• flatfile - Add dbm support for flat files
• fpm - Enable the FastCGI Process Manager SAPI
• ftp - Add FTP (File Transfer Protocol) support
• gd - Adds support for gd (bundled with PHP)
• gdbm - Add support for sys-libs/gdbm (GNU database libraries)
• gmp - Add support for dev-libs/gmp (GNU MP library)
• hash - Enable the hash extension
• iconv - Enable support for the iconv character set conversion library
• imap - Add support for IMAP (Internet Mail Application Protocol)
• inifile - Add dbm support for .ini files
• intl - Enables the intl extension for extended internalization support
• iodbc - Add support for iODBC library
• ipv6 - Add support for IP version 6
• json - Enable JSON support
• kerberos - Add kerberos support
• ldap - Add LDAP support (Lightweight Directory Access Protocol)
• ldap-sasl - Add SASL support for the PHP LDAP extension
• libedit - Use the libedit library (replacement for readline)
• libmysqlclient - Use libmyslclient driver for mysql, mysqli, PDO_Mysql (not recommended)
• libressl - Use dev-libs/libressl instead of dev-libs/openssl when applicable (see also the ssl useflag)
• lmdb - Enable support for dev-db/lmdb db backend
• mhash - Add support for the mhash library
• mssql - Add support for Microsoft SQL Server database
• mysql - Add mySQL Database support
• mysqli - Add support for the improved mySQL libraries
• ncurses - Add ncurses support (console display library)
• nls - Add Native Language Support (using gettext - GNU locale utilities)
• oci8 - Add Oracle 8 Database Support
• oci8-instant-client - Use dev-db/oracle-instantclient-basic as Oracle provider instead of requiring a full Oracle server install
• odbc - Add ODBC Support (Open DataBase Connectivity)
• opcache - Enables built-in opcode cache, replacing pecl-apc et al.
• pcntl - Add support for process creation functions
• pdo - Enable the bundled PDO extensions
• phar - Enables the phar extension to provide phar archive support
• phpdbg - Enable the PHP Debug Command Line SAPI (like gdb for php)
• posix - Add support for POSIX-compatible functions
• postgres - Add support for the postgresql database
• qdbm - Add support for the qdbm (Quick Database Manager) library
• readline - Enable support for libreadline, a GNU line-editing library that almost everyone wants
• recode - Enable support for the GNU recode library
• selinux - !!internal use only!! Security Enhanced Linux support, this must be set by the selinux profile or breakage will occur
• session - Add persistent session support
• session-mm - Include dev-libs/mm support for session storage
• sharedmem - Add support for shared memory use
• simplexml - Support for SimpleXML
• snmp - Add support for the Simple Network Management Protocol if available
• soap - Add support for SOAP (Simple Object Access Protocol)
• sockets - Add support for tcp/ip sockets
• sodium - Enable support for crypto through dev-libs/libsodium
• spell - Add dictionary support
• sqlite - Add support for sqlite - embedded sql database
• sqlite3 - Add support for sqlite3 - embedded sql database
• ssl - Add support for SSL/TLS connections (Secure Socket Layer / Transport Layer Security)
• sybase - Add support for the Sybase SQL Database Server
• sybase-ct - Add support for Sybase-CT
• systemd - Enable use of systemd-specific libraries and features like socket activation or session tracking
• sysvipc - Support for System V-compatible inter-process communication
• test - Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
• threads - Add threads support for various packages. Usually pthreads
• tidy - Add support for HTML Tidy
• tokenizer - Add support for the PHP file parser
• tokyocabinet - Enable support for dev-db/tokyocabinet db backend
• truetype - Add support for FreeType and/or FreeType2 fonts
• unicode - Add support for Unicode
• vpx - Enable webp support for GD in php-5.x
• wddx - Add support for Web Distributed Data eXchange
• webp - Enable webp support for GD in php-7.x
• xml - Add support for XML files
• xmlreader - Enable XMLReader support
• xmlrpc - Support for xml-rpc library
• xmlwriter - Enable XMLWriter support
• xpm - Add support for XPM graphics format
• xslt - Enable the XSL extension
• zip - Enable support for ZIP archives
• zip-encryption - Enable ZIP file encryption from dev-libs/libzip
• zlib - Add support for zlib (de)compression

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