Alphabetical
- Apache
- APCu
- Arrays
- BC Math
- Bzip2
- Calendar
- Classes/Objects
- CommonMark
- COM
- Componere
- CSPRNG
- Ctype
- CUBRID
- cURL
- Date/Time
- DBA
- dBase
- Direct IO
- Directories
- DOM
- Data Structures
- Eio
- Enchant
- Error Handling
- Ev
- Event
- Program execution
- Exif
- Expect
- FANN
- FDF
- FFI
- Fileinfo
- Filesystem
- Filter
- FastCGI Process Manager
- FTP
- Function Handling
- Gearman
- Gender
- GeoIP
- Gettext
- Gmagick
- GMP
- GnuPG
- Hash
- HRTime
- Firebird/InterBase
- IBM DB2
- iconv
- Igbinary
- GD
- ImageMagick
- IMAP
- PHP Options/Info
- Inotify
- intl
- JSON
- LDAP
- libxml
- Lua
- LuaSandbox
- LZF
- Mailparse
- Math
- Multibyte String
- Mcrypt
- Memcache
- Memcached
- Mhash
- Misc.
- mqseries
- MySQL (Original)
- Mysql_xdevapi
- MySQLi
- Mysqlnd
- Network
- OAuth
- OCI8
- OPcache
- OpenAL
- OpenSSL
- Output Control
- parallel
- Parle
- Password Hashing
- PCNTL
- PCRE
- PDO
- CUBRID (PDO)
- MS SQL Server (PDO)
- Firebird (PDO)
- IBM (PDO)
- Informix (PDO)
- MySQL (PDO)
- Oracle (PDO)
- ODBC and DB2 (PDO)
- PostgreSQL (PDO)
- SQLite (PDO)
- MS SQL Server (PDO)
- PostgreSQL
- Phar
- phpdbg
- POSIX
- PS
- Pspell
- pthreads
- Quickhash
- Radius
- Rar
- Readline
- Recode
- Reflection
- RpmInfo
- RRD
- runkit7
- ScoutAPM
- Seaslog
- Semaphore
- Sessions
- Shared Memory
- SimpleXML
- SNMP
- SOAP
- Sockets
- Sodium
- Solr
- SPL
- SQLite3
- SQLSRV
- ssdeep
- SSH2
- Statistics
- Stomp
- Streams
- Strings
- SVM
- SVN
- Swoole
- Sync
- Taint
- TCP
- Tidy
- Tokenizer
- Trader
- UI
- ODBC
- uopz
- URLs
- V8js
- Variable handling
- var_representation
- Varnish
- WDDX
- win32service
- WinCache
- wkhtmltox
- xattr
- xdiff
- Xhprof
- XLSWriter
- XML Parser
- XMLDiff
- XMLReader
- XML-RPC
- XMLWriter
- XSL
- Yac
- Yaconf
- Yaf
- Yaml
- Yar
- YAZ
- Zip
- Zlib
- 0MQ messaging
- ZooKeeper