Print some code from a foreach loop at each predetermined number

[lelumieredans]

My code is looping through some content and outputting some code.I need to work out a way of telling my code to output some predefined text every X loops. For example:\[quote\] Task: print "code here" on loop item 1 and every 4 further loops.\[/quote\]So "code here" will only be outputted on foreach loop item 1, 4, 8, 12