cURL error

running curl to install composer Get an error:

curl -sS https://getcomposer.org/installer |
php
exec(): 0509-036 Cannot load program curl because of the following
errors:
0509-150 Dependent module libcrypto.a(libcrypto.so.1.0) could
not be loaded.
0509-022 Cannot load module
libcrypto.a(libcrypto.so.1.0).
0509-026 System error: A file or directory in the path name does
not exist.
/QOpenSys/usr/bin/-sh: php: not
found.
$


what to do?

thanks,