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PHP 8.4.0 RC2 available for testing
Getting Started
Introduction
A simple tutorial
Language Reference
Basic syntax
Types
Variables
Constants
Expressions
Operators
Control Structures
Functions
Classes and Objects
Namespaces
Enumerations
Errors
Exceptions
Fibers
Generators
Attributes
References Explained
Predefined Variables
Predefined Exceptions
Predefined Interfaces and Classes
Predefined Attributes
Context options and parameters
Supported Protocols and Wrappers
Security
Introduction
General considerations
Installed as CGI binary
Installed as an Apache module
Session Security
Filesystem Security
Database Security
Error Reporting
User Submitted Data
Hiding PHP
Keeping Current
Features
HTTP authentication with PHP
Cookies
Sessions
Handling file uploads
Using remote files
Connection handling
Persistent Database Connections
Command line usage
Garbage Collection
DTrace Dynamic Tracing
Function Reference
Affecting PHP's Behaviour
Audio Formats Manipulation
Authentication Services
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
Other Services
Search Engine Extensions
Server Specific Extensions
Session Extensions
Text Processing
Variable and Type Related Extensions
Web Services
Windows Only Extensions
XML Manipulation
GUI Extensions
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Affecting PHP's Behaviour »
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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
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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