overridding

Hi

We know in JAVA, overridding is simple, how to do that in PHP? i searched online, only found examples on child class inherit parent then override, any possibility to do overridding in the same class? please give example, thank you

The PHP manual has an extensive section on classes and objects (http://us.php.net/manual/en/language.oop5.php).

already read, but i got this

3) Sadly, overriding methods is only possible with the Zend II engine via Inheritance or Polymorphism, ( and __construct() can only be defined within a class). If you want to override a method in the same class, my suggestion is to provide the method signature with a $flag = null variable, which you call a SWITCH on to pick what the data should do

which i do not understand

So you can see there are limitations (at least in this version).


my suggestion is to provide the method signature with a $flag = null variable, which you call a SWITCH on to pick what the data should do

which i do not understand


Ok, this is very simple. Here's an example (UNTESTED):

class SomeClass
{
function some_method( $flag= null ) {
if ( is_null($flag) ) {
return 'default value';
} else {
switch($flag) {
case 'foo':
return 'foo passed';
case 'bar':
return 'bar passed';
default:
return "args: 'foo' | 'bar'";
}
}
}

}


The method's signature has an argument with a default value, null. If you decide to call it with no arg, e.g. $obj->some_method(), then the default action is taken. If you pass an arg, e.g. $obj->some_method('foo'), then the switch statement triggers the appropriate action.

I'm sure there are examples using func_get_args() (http://us.php.net/manual/en/function.func-get-args.php) as well.

....thanks