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Creating a loop singling out multiples of 3 and 5 and replacing them with a word


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I have recently been to an interview for a Junior PHP developer position and everything was going well until i was asked to do a task.


The task was as follows,


Write a program that prints the numbers from 1 to 100. But for multiples of three print “Fizz” instead of the number and for the multiples of five print “Buzz”. For numbers which are multiples of both three and five print “FizzBuzz”.


I could do the basic loop to print out the numbers but couldn't work out a way to single out the multiples of 3 and 5 and where the multiples were both 3 and 5.


Any help would be  appreciated.




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This would do it:

if($i % 3 == 0 && $i % 5 == 0)
	echo "FizzBuzz\r\n";
elseif($i % 3 == 0) // if remainder of i divided by 3 is 0 then i is a multiple of 3. See http://en.wikipedia.org/wiki/Modulo_operation
	echo "Fizz\r\n";
elseif($i % 5 == 0)
	echo "Buzz\r\n";
	echo $i . "\r\n";


You could probably do it a bit nicer than that but it's one way.

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