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Predefined Variables
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Predefined Interfaces and Classes
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Introduction
General considerations
Installed as CGI binary
Installed as an Apache module
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HTTP authentication with PHP
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Function Reference
Affecting PHP's Behaviour
Audio Formats Manipulation
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Command Line Specific Extensions
Compression and Archive Extensions
Cryptography Extensions
Database Extensions
Date and Time Related Extensions
File System Related Extensions
Human Language and Character Encoding Support
Image Processing and Generation
Mail Related Extensions
Mathematical Extensions
Non-Text MIME Output
Process Control Extensions
Other Basic Extensions
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Variable and Type Related Extensions
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Function Reference
Tip
See also
Extension List/Categorization
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Affecting PHP's Behaviour
APCu
— APC User Cache
Componere
Error Handling
— Error Handling and Logging
FFI
— Foreign Function Interface
OPcache
Output Control
— Output Buffering Control
PHP Options/Info
— PHP Options and Information
phpdbg
— Interactive PHP Debugger
runkit7
uopz
— User Operations for Zend
WinCache
— Windows Cache for PHP
Xhprof
— Hierarchical Profiler
Yac
Audio Formats Manipulation
OpenAL
— OpenAL Audio Bindings
Authentication Services
Radius
Command Line Specific Extensions
Readline
— GNU Readline
Compression and Archive Extensions
Bzip2
LZF
Phar
Rar
— Rar Archiving
Zip
Zlib
— Zlib Compression
Cryptography Extensions
Hash
— HASH Message Digest Framework
Mcrypt
Mhash
OpenSSL
Password Hashing
Rnp
Sodium
Database Extensions
Abstraction Layers
Vendor Specific Database Extensions
Date and Time Related Extensions
Calendar
Date/Time
— Date and Time
HRTime
— High resolution timing
File System Related Extensions
Direct IO
Directories
Fileinfo
— File Information
Filesystem
Inotify
xattr
xdiff
Human Language and Character Encoding Support
Enchant
— Enchant spelling library
Gender
— Determine gender of firstnames
Gettext
iconv
intl
— Internationalization Functions
Multibyte String
Pspell
Recode
— GNU Recode
Image Processing and Generation
Exif
— Exchangeable image information
GD
— Image Processing and GD
Gmagick
ImageMagick
— Image Processing (ImageMagick)
Mail Related Extensions
IMAP
— IMAP, POP3 and NNTP
Mail
Mailparse
Mathematical Extensions
BC Math
— BCMath Arbitrary Precision Mathematics
GMP
— GNU Multiple Precision
Math
— Mathematical Functions
Statistics
Trader
— Technical Analysis for Traders
Non-Text MIME Output
FDF
— Forms Data Format
GnuPG
— GNU Privacy Guard
wkhtmltox
PS
— PostScript document creation
RpmInfo
XLSWriter
Process Control Extensions
Eio
Ev
Expect
PCNTL
— Process Control
POSIX
Program execution
— System program execution
parallel
pthreads
Semaphore
— Semaphore, Shared Memory and IPC
Shared Memory
Sync
Other Basic Extensions
GeoIP
— Geo IP Location
FANN
— FANN (Fast Artificial Neural Network)
Igbinary
JSON
— JavaScript Object Notation
Simdjson
Lua
LuaSandbox
Misc.
— Miscellaneous Functions
Random
— Random Number Generators and Functions Related to Randomness
Seaslog
SPL
— Standard PHP Library (SPL)
Streams
Swoole
Tidy
Tokenizer
URLs
V8js
— V8 Javascript Engine Integration
Yaml
— YAML Data Serialization
Yaf
— Yet Another Framework
Yaconf
Taint
Data Structures
var_representation
Other Services
cURL
— Client URL Library
Event
FTP
Gearman
LDAP
— Lightweight Directory Access Protocol
Memcache
Memcached
mqseries
Network
RRD
— RRDtool
ScoutAPM
SNMP
Sockets
SSH2
— Secure Shell2
Stomp
— Stomp Client
SVM
— Support Vector Machine
SVN
— Subversion
TCP
— TCP Wrappers
Varnish
YAZ
0MQ messaging
— ZMQ
ZooKeeper
Search Engine Extensions
Solr
— Apache Solr
Server Specific Extensions
Apache
FastCGI Process Manager
Session Extensions
Sessions
— Session Handling
Text Processing
CommonMark
Parle
— Parsing and lexing
PCRE
— Regular Expressions (Perl-Compatible)
ssdeep
— ssdeep Fuzzy Hashing
Strings
Variable and Type Related Extensions
Arrays
Classes/Objects
— Class/Object Information
Ctype
— Character type checking
Filter
— Data Filtering
Function Handling
Quickhash
Reflection
Variable handling
Web Services
OAuth
SOAP
Yar
— Yet Another RPC Framework
XML-RPC
Windows Only Extensions
COM
— COM and .Net (Windows)
win32service
XML Manipulation
DOM
— Document Object Model
libxml
SimpleXML
WDDX
XMLDiff
— XML diff and merge
XML Parser
XMLReader
XMLWriter
XSL
GUI Extensions
UI
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