Strings are concatenated with the . operator, not +.
https://3v4l.org/v9tFN
Or in older PHP versions it would output a number (because it would cast the strings to 0).
Strings are concatenated with the . operator, not +.
https://3v4l.org/v9tFN
Or in older PHP versions it would output a number (because it would cast the strings to 0).