with PHP, several methods are available to produce output:
    echo "hello world\n";
    print "hello world\n";
    print_r("hello world\n");
    var_export("hello world\n");
However all these methods have something in common: they do not produce their
own newline. With each method, the user is required to provide a newline with
"\n", PHP_EOL or similar. This is bothersome because many other programming
languages offer such a method. For example Python:
    print('hello world')
Perl:
    use feature say;
    say 'hello world';
Ruby:
    puts 'hello world'
Lua:
    print 'hello world'
Even C:
    #include <stdio.h>
    int main() {
       puts("hello world");
    }
To resolve, implement "puts" function similar to Ruby or C:
- http://pubs.opengroup.org/onlinepubs/9699919799/functions/puts.html
- http://ruby-doc.org/core/IO.html#method-i-puts