String concatenation vs array implode in PHP

Question

Having used Java for a long time my standard method for creating long strings piece by piece was to add the elements to an array and then implode the array.

Answer 1

One (subtle) difference is clearly visible when generating a character-seperated string:

The first one will print a,b where the latter will print a,b,. So unless you're using an empty string as a seperator, as you did in your example, it's usually preferred to use implode().