Evaluate(string_expression1 [, string_expression2 [, ... ] ] )
The function evaluates all of its arguments, left to right, and returns the result of evaluating the last argument.
Valid expressions to be evaluated.
String expressions can be arbitrarily complex. Note, however, that they are somewhat more complicated to write because they are inside a string. In particular, if the string expression is double-quoted, double-quotes inside the expression must be escaped.