"Hello world" in PHP code:

<?php
echo 'Hello world!';
?>

"Hello world" in VBScript code:

<%
Response.Write("Hello world!")
%>

"Hello world" in Pascal code:

program New(output);
begin
Writeln('Hello world!')
end.

"Hello world" in Perl code:

print "Hello world!";

"Hello world" in Python.

print "Hello world!"

"Hello world" in Basic code:

Sub Hello_World()
print "Hello World!"
End Sub

"Hello world" in Turing:

put "Hello World!"

"Hello world" in Game Maker Language:

show_message("Hello World!")

or if you wish to have it drawn in the middle of the screen as opposed to displayed in a popup box. Use the following:

draw_text(room_width/2,room_height/2,"Hello World")

"Hello World" in javascript:

document.write("Hello World!");

"Hello World" in Fortran:

program main
write(*,*) "Hello World!"
end

"Hello World" in Ruby:

puts "Hello World!"