[SOLVED] Overriding functions in classes

[Jessica]

Why can I override certain functions, but not others?

Example: (not the real code)
[code]<?php
Class myClass{
  var $str
 
  function extract(){
      return $this->str;
  }

  function print(){
    return $this->str;
  }
}
?>[/code]

It's fine with extract(), but when I add in the print() one, I get a parse error saying unexpected print. Why can I do this with extract but not print?

[toplay]

You're mising a semi-colon after var $str

Extract() is a reserved function, while print() is reserved too but it's a language construct (can be used without parenthesis).

It's usually a bad idea to use variable or function names that are the same or similar to PHP reserved words.

hth.

[Jessica]

As I mentioned it's example code, so there isn't really a ; missing.
Thanks.

[Hypnos]

I googled around and found this:
http://bugs.php.net/bug.php?id=14178&edit=1

[toplay]

Thx Hypnos. As I mentioned, it's a bad idea to use PHP resrved words for pretty much anything.

Same goes for MySQL - some people like to use a column name of password but it's reserved (you should use a different name or enclose it in backtick marks `password` within SQL and stored procedures).

[Jessica]

Yeah every now and then I accidentally use a reserved MySQL word without knowing, and after a few minutes of trying to debug a query that looks fine, I always check the list.
I looked up functions, etc in the manual, but it didn't occur to me that print was a reserved PHP word. :D