extension_loaded

Function • Params and return types changed in PHP 8.0

Find out whether an extension is loaded.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

extension_loaded Function synopsis

extension_loaded(string $extension): bool

Parameters

$extension

Typestring

The extension name. This parameter is case-insensitive.

$extension accepts one of the following string values:

  • amqp
  • apache
  • apc
  • apd
  • bbcode
  • bcmath
  • bcompiler
  • bz2
  • cairo
  • calendar
  • chdb
  • classkit
  • com
  • crack
  • ctype
  • cubrid
  • curl
  • cyrus
  • dba
  • dbase
  • dbplus
  • dbx
  • dio
  • dom
  • dotnet
  • eio
  • enchant
  • ev
  • event
  • exif
  • expect
  • fam
  • fbsql
  • fdf
  • fileinfo
  • filepro
  • filter
  • fribidi
  • ftp
  • gearman
  • gender
  • geoip
  • gettext
  • gmagick
  • gmp
  • gnupg
  • gupnp
  • haru
  • htscanner
  • pecl_http
  • hyperwave
  • hwapi
  • interbase
  • ibm_db2
  • iconv
  • id3
  • informix
  • iisfunc
  • gd
  • imagick
  • imap
  • include
  • ingres
  • inotify
  • intl
  • java
  • json
  • judy
  • kadm5
  • ktaglib
  • lapack
  • ldap
  • libevent
  • libxml
  • lua
  • lzf
  • mailparse
  • maxdb
  • mbstring
  • mcrypt
  • mcve
  • memcache
  • memcached
  • memtrack
  • mhash
  • ming
  • mnogosearch
  • mongo
  • mqseries
  • msession
  • msql
  • mssql
  • mysql
  • mysqli
  • mysqlnd
  • mysqlnd_memcache
  • mysqlnd_ms
  • mysqlnd_mux
  • mysqlnd_qc
  • mysqlnd_uh
  • ncurses
  • net_gopher
  • newt
  • notes
  • nsapi
  • oauth
  • oci8
  • oggvorbis
  • openal
  • openssl
  • ovrimos
  • paradox
  • parsekit
  • pcntl
  • pcre
  • pdflib
  • pdo
  • pdo_4d
  • pdo_cubrid
  • pdo_dblib
  • pdo_firebird
  • pdo_ibm
  • pdo_informix
  • pdo_mysql
  • pdo_oci
  • pdo_odbc
  • pdo_pgsql
  • pdo_sqlite
  • pdo_sqlsrv
  • pdo_pgsql
  • phar
  • posix
  • printer
  • proctitle
  • ps
  • pspell
  • pthreads
  • qtdom
  • quickhash
  • radius
  • rar
  • readline
  • recode
  • rpmreader
  • rrd
  • runkit
  • sam
  • sca
  • scream
  • sca_sdo
  • sysvmsg
  • session
  • session_pgsql
  • shmop
  • simplexml
  • snmp
  • soap
  • sockets
  • solr
  • sphinx
  • spl_types
  • spplus
  • sqlite
  • sqlite3
  • sqlsrv
  • ssdeep
  • ssh2
  • stats
  • stomp
  • svm
  • svn
  • swf
  • swish
  • sybase
  • taint
  • tcpwrap
  • tidy
  • tokenizer
  • tokyo_tyrant
  • trader
  • odbc
  • v8js
  • varnish
  • vpopmail
  • w32api
  • wddx
  • weakref
  • win32ps
  • win32service
  • wincache
  • xattr
  • xdiff
  • xhprof
  • xml
  • xmlreader
  • xmlrpc
  • xmlwriter
  • xsl
  • xslt
  • yaf
  • yaml
  • yaz
  • zip
  • zlib

Return value

Typebool

Returns true if the extension identified by $extension is loaded, false otherwise.

Changes to the extension_loaded Function

PHP 8.0

  • Return type added: bool
  • Parameter name of parameter #1 changed: $extension_name to $extension
  • Parameter type added for parameter #1 ($extension): string
- extension_loaded($extension_name)
+ extension_loaded(string $extension): bool

extension_loaded Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes