"This is not to say however that a string cannot hold a number
value, it can. Under normal circumstances however, you would not
unless that number was purely for display.
"You'll notice also that there are 2 sets of parentheses used to
enclose strings mentioned above, each set operates differently to
"Using '' parentheses
"When you enclose a PHP string using '' (Otherwise know as
single quotation marks) exactly what you put in the string is
displayed. This means that no embedded variables are translated and
no special sequences such as carriage returns are obeyed."