Question

Is there a difference or is one better than the other of the following:

$var = ''; ... $var .= 'blah blah'; $var .= $var2; $var .= 'blah blah'; 

Or

$var = ''; ... $var .= 'blah blah' . $var2 . 'blah blah'; 

Is there a speed difference or is there a reason why you’d pick one over the other?

Answer 1

There is a small difference if you echo the string.

echo $var1,$var2,$var3 // comma (echo with multiple arguments) 

is slightly faster than

echo $var1.$var2.$var3 // dot   (concat and echo)