$ php --ri mongodb

mongodb

MongoDB support => enabled
MongoDB extension version => 1.4.4
MongoDB extension stability => stable
libbson bundled version => 1.9.4
libmongoc bundled version => 1.9.4
libmongoc SSL => enabled
libmongoc SSL library => OpenSSL
libmongoc crypto => enabled
libmongoc crypto library => libcrypto
libmongoc crypto system profile => disabled
libmongoc SASL => disabled
libmongoc compression => enabled
libmongoc compression snappy => disabled
libmongoc compression zlib => enabled

already tried install :
- sudo pecl install openssh-devel
- sudo pecl install mongodb-1.4.4