Installing/Configuring
PHP Manual

Requirements

The » OpenSSL and » libssh2 libraries are required. Ensure that the development libraries are installed, where a typical package name might be openssl-dev.

Note: Version 0.4 or newer of the libssh2 library is required, although it's possible newer releases of pecl/ssh2 may require newer versions (see the release notes).


Installing/Configuring
PHP Manual