脚跟着地的专栏

Persons new to programming often have difficulty grasping the concept of language constructs. Furthermore, both new programmers and seasoned programmers often get tripped up when it comes to telling t

1. Speed.  There is a difference between the two, but speed-wise itshould be irrelevant which one you use.  echo is marginally faster sinceit doesnt set a return value if you really want to get down