base64_decode Base64 Encoding and Decoding conn_create_fd Processx connections conn_create_fifo Processx FIFOs conn_create_unix_socket Unix domain sockets curl_fds Create a pollable object from a curl multi handle's file descriptors default_pty_options Default options for pseudo terminals (ptys) poll Poll for process I/O or termination process External process run Run external command, and wait until finishes