curl_exec is listed in there, which means you can't run any curl commands, which are definitely required by JFBConnect.disable_functions
fsockopen, curl_multi_getcontent, curl_multi_exec, show_source, curl_exec, url_multi_exec, system, chown, chgrp, shell_exec, parse_ini_file, passthru, exec, dl, popen, proc_open, proc_close, allow_url_fopen, disk_free_space, set_time_limit, leak, tmpfile, symlink, ftp_exec, ftp_get, ftp_login, ftp_nb_fput, ftp_put, ftp_raw, ftp_rawlist, fsocket, pfsockopen, fp, fput, ftp_connect
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