Meaning of some "Magic constants"?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello;

I have been looking at my copy of the php manual, at magic constants and have a question about two of them.

1: __line__ : I presume that this would be irrelevant if a script file was compressed by removing all the superfluous white space, including line breaks and tabs? (Although since php is not exposed to the client unless the developer uses highlight_file or highlight_string, compressing it this way is not too useful)

2: __trait__: This is the first time I have run into this term in a programming context. What does it mean? In the manual there is an associative reference to namespace. Perhaps I should read up on namespaces relative to php. The only other context I am aware of the term is in XML This is a bit confusing because I have seen the term used referring to
object/property relationships, such as in javascript.

Specifically, you can create an object through the use of a constructor function

function SomeJSObj()
               {
                 this.introduce = function(a)
                        {
                          alert('Hi, I am '+a)
                        }
               }

var guy = new SomeJSObj()

guy.introduce('Joe') // -> alert dialog -> "Hi, I am Joe"

So the function/property 'introduce' is namespaced by the object guy.

So, how is it different than a member function or variable of a class
that can only be accessed via reference to an object instance?

Then, finally, how does the term inferred by __trait__ relate?

Thank you for time and attention;
JK

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php





[Index of Archives]     [PHP Home]     [Apache Users]     [PHP on Windows]     [Kernel Newbies]     [PHP Install]     [PHP Classes]     [Pear]     [Postgresql]     [Postgresql PHP]     [PHP on Windows]     [PHP Database Programming]     [PHP SOAP]

  Powered by Linux