The ptint() function

Now we change our script so That we print something to the browser for ourselves. So we create php code just.<?php  pirnt "Hello world";?>.

print() is a language construct that outputs data. Although it is not a function. it behaves like one. It accepts a collection of characters, Known as a string.Strings must be enclosed by quotation marks,either double or single. .
Similar to the print() statement is echo(), which behaves in the same way  ,you could replace print() with echo() without any noticeable effect.