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There are rather significant syntactical differences between PHP and Ruby. For example PHP requires semicolons at the end of lines and generally requires curly brackets to enclose blocks of code. Ruby, on the other hand, uses newline characters to denote the end of a line of code and many code constructs such as function definitions, and various loops are ended with the word “end” rather than being surrounded by curly braces. Below is an example of PHP vs Ruby syntax.