Extensions

HHVM supports several core PHP extensions, with more being developed. Some are integrated into the virtual machine itself whereas others are separate extensions that are loaded dynamically.

Integrated Extensions

Calling the get_loaded_extensions() function from HHVM/3.4.0-dev+2014.10.08 has the following result:

• apache
• apc
• array
• asio
• bcmath
• bz2
• ctype
• curl
• date
• debugger
• dom
• enum
• exif
• fb
• fileinfo
• filter
• gd
• gmp
• hash
• hh
• hhvm.debugger
• hhvm.ini
• hotprofiler
• iconv
• idn
• imagick
• imap
• intl
• json
• ldap
• libxml
• mail
• mailparse
• mbstring
• mcrypt
• memcache
• memcached
• mysql
• mysqli
• objprof
• openssl
• pcntl
• pcre
• PDO
• pdo_mysql
• pdo_sqlite
• phar
• posix
• readline
• redis
• reflection
• server
• session
• SimpleXML
• soap
• sockets
• SPL
• sqlite3
• standard
• sysvmsg
• sysvsem
• sysvshm
• thread
• thrift_protocol
• tokenizer
• url
• wddx
• xdebug-not-done
• xenon
• xhprof
• xml
• xmlreader
• xmlwriter
• xsl
• zip
• zlib

Externally-provided Extensions

• dbase
• geoip
• msgpack
• mongofill (mongodb)
• pgsql
• shp
• ssdeep
• uuid
• uv

Writing your own extensions

• Extension API