When I run system('ruby /lib/program.rb') within a PHP script, I get this in my error.log file:
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- watir-webdriver (LoadError)
And when I change to system('ruby2.0 /lib/program.rb'), I get this:
/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:53:in `require': cannot load such file -- watir-webdriver (LoadError)
When I run ruby /lib/program.rb, it works in terminal. Why is it different when called via PHP's system function?
The PHP file is in my public folder. The Ruby script is in lib/ folder. I am using Ubuntu 14.04.