php -m

[PHP Modules]
apc
apcu
bz2
calendar
Core
ctype
curl
date
dom
exif
fileinfo
filter
ftp
gd
gettext
hash
iconv
igbinary
intl
json
libxml
mbstring
mcrypt
msgpack
mysqli
mysqlnd
openssl
pcntl
pcre
Phar
readline
redis
Reflection
session
shmop
SimpleXML
sockets
sodium
SPL
sqlite3
standard
sysvmsg
sysvsem
sysvshm
tokenizer
xml
xmlreader
xmlwriter
xsl
Zend OPcache
zip
zlib

[Zend Modules]
Zend OPcache