[HELP]a simple question

[runeveryday]

i am a newbie of php,maybe this is a simple and a little silly question,but i want to know the true principle of it.hope someone can help me .

Q:

there is a function,and have a form like this $a->b in a function bracket.what is $a->b mean and have what effect? the sign '->' mean is?

 

eg:

format_date($comment->timestamp)

anyone's reply is appreciated!

[scvinodkumar]

Check this http://in.php.net/manual/en/function.mysql-fetch-object.php

[The Little Guy]

Basically you are working with classes, and in your example, $comment is an instance of some class (probably something to do with comments). since "timestamp" doesn't have any parenthesis after it, it is not a function, (its called a "method", when your dealing classes). So that means that timestamp is a variable in the comment class.

 

Most languages use a '.' instead of a '->' to tell the parser what class/method/variable to use.

 

Note: in a class its not called a variable, its called something else but I cant remember right now sorry.

 

More info: oop

[runeveryday]

property?

thank you very mucn for you reply!

[runeveryday]

Basically you are working with classes, and in your example, $comment is an instance of some class (probably something to do with comments). since "timestamp" doesn't have any parenthesis after it, it is not a function, (its called a "method", when your dealing classes). So that means that timestamp is a variable in the comment class.

 

Most languages use a '.' instead of a '->' to tell the parser what class/method/variable to use.

 

Note: in a class its not called a variable, its called something else but I cant remember right now sorry.

 

More info: oop

 

Basically you are working with classes.

how do you know that is classes not  function.

thx!

[The Little Guy]

if it was a function (method), it would look like this:

 

format_date($comment->timestamp());