Echo PHP

Echo is marginally faster than print, and print returns a value, echo does not.

Echo allows comma separated arguments which it will concatenate. Print accepts only a single argument, but this is hardly a deal-breaker, because you can concatenate with a dot anyway.

Echo does not have a place in the precedence table, which means you can't use it in a complex expression.

That said ... for most cases, the major significant difference is:

Echo is quicker to type :)

Print outputs a single string, echo can output multiple strings. (It's in the help file.)