using template in a loop

[ZiNgA BuRgA]

Of course, because you're using =, you're overwriting the variable on each loop cycle.
Consider

PHP Code:

$a = 1; $a = 2;

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The first line may as well not be there because it's overwritten by the second.

You probably want to use the string concatenation operator (.=) not the assign operator (=).