Which PHP functions are required for OJS and plugins?

Software Support
1

Hello everyone,

The following PHP functions are disabled by default by my server service provider. Which PHP functions need to be turned on for OJS and plugins to work properly. I couldn’t find a complete list in the developer documentation.

Disabled PHP functions
getmyuid,passthru,leak,listen,diskfreespace,tmpfile,link,shell_exec,dl,exec,system,highlight_file,source,show_source,fpassthru,virtual,posix_ctermid,posix_getcwd,posix_getegid,posix_geteuid,posix_getgid,posix_getgrgid,posix_getgrnam,posix_getgroups,posix_getlogin,posix_getpgid,posix_getpgrp,posix_getpid,posix,_getppid,posix_getpwuid,posix_getrlimit,posix_getsid,posix_getuid,posix_isatty,posix_kill,posix_mkfifo,posix_setegid,posix_seteuid,posix_setgid,posix_setpgid,posix_setsid,posix_setuid,posix_times,posix_ttyname,posix_uname,proc_open,proc_close,proc_nice,proc_terminate,escapeshellcmd,ini_alter,popen,pcntl_exec,socket_accept,socket_bind,socket_clear_error,socket_close,socket_connect,symlink,posix_geteuid,ini_alter,socket_listen,socket_create_listen,socket_read,socket_create_pair,stream_socket_server

What application are you using?
OJS 3.4.0-7

2

Hi @asmecher,

Can you clarify this for me?

Best,

3

Hi @peditor,

This is a pretty tough question to answer in general because you can disable any PHP function, and OJS uses lots of 3rd party libraries that might use some of these functions. But I see at least a few that OJS will probably require: tmpfile, shell_exec, exec, system, diskfreespace, passthru, proc_open, proc_close, escapeshellcmd. There will probably be others. When you attempt to use one of these but it’s disabled, a clear error message will be recorded in the PHP error log to help you resolve it.

Regards,
Alec Smecher
Public Knowledge Project Team

1 Like
4

You could also do a recursive grep for these functions in the OJS code to find out.