little PHP OOP help

[dmmh]

lo

I am delving into OOP PHP coding now, mainly used function based before.
Is there a way to call a method of class A inside a method from class B?
I dont want to inherit anything so it can be modified or whatever, I just wanne call a method inside another class.

How can I do it?
Or is it not possible?

[Foo]

You can't call a method from a class without first creating an instance of that class and giving it a name.

So if you make an instance of your class 'person' and call the instance 'tempperson' you would call the method in that class that you called 'setname' like this:

$tempperson->setname( $newname )

If you have a method inside a class which might be called without the class, it doesn't want to be IN the class.

[^misantropia^]

If you have a method inside a class which might be called without the class, it doesn't want to be IN the class.

Not necessarily. Check out, for instance, these design patterns:

http://en.wikipedia.org/wiki/Singleton_pattern
http://en.wikipedia.org/wiki/Factory_method_pattern

[^misantropia^]

How can I do it?

Code: Select all

<?php

class A {
        function process() {
                return $this->message . "\n";
        }
}

class B {
        function B($message) {
                $this->message = $message;
        }

        function process() {
                return A::process();
        }
}

$b = new B("Hello, world!");
print $b->process();

?>

As you see, the methods of class A are run in the context of the instance of class B.

[dmmh]

You can't call a method from a class without first creating an instance of that class and giving it a name.

So if you make an instance of your class 'person' and call the instance 'tempperson' you would call the method in that class that you called 'setname' like this:

$tempperson->setname( $newname )

ofcourse, I know this

If you have a method inside a class which might be called without the class, it doesn't want to be IN the class.

how do you mean this?

this is what I am trying to do:

file: foldersCL.php (holds various shit used for stuff related to folders

Code: Select all

class directory {
	private $origumask 	= NULL;
	private $oldumask 	= NULL;
	private $newDir 	= NULL;

	public function makeDir($dir){
		$this->oldumask = umask(0);
		$this->newDir = @mkdir($dir, 0777); 			//make new tmp directory 
		$this->origumask = umask($this->oldumask);
	}
}?>

I am calling the method in another class inside the file imageCL, which holds my image resize and display stuff

the bit that doesn't work:

Code: Select all

	public function setSaveFolder($folder){
		$this->saveFolder	= $folder;
		if (!empty($this->saveFolder) && !is_dir($this->saveFolder)){	//create the directory if it does not exist	
			$dir = new directory();
			$dir->makeDir($this->saveFolder);
		}
	}

it throws me a method undefined error for the makeDir() method

all classes are autloaded so no worries there

[dmmh]

If you have a method inside a class which might be called without the class, it doesn't want to be IN the class.

Not necessarily. Check out, for instance, these design patterns:

http://en.wikipedia.org/wiki/Singleton_pattern
http://en.wikipedia.org/wiki/Factory_method_pattern

thanks

[dmmh]

not quite what I meant though. Can't it be done 'my way'?

[^misantropia^]

all classes are autloaded so no worries there

Hmm, the code snippet itself appears to be syntactically valid so I expect it is a matter of some source file not being included. Could you post the entire source?

[dmmh]

mmm, I found it. the file name was different from the class name so it couldnt open the file in the __autoload function. Would have expected PHP to throw a error when it fails to load a require_once referenced file, but I guess I was assuming to much

edit: thanks btw, all!

[dmmh]

OOP is fun! hellofawork, but fun