Way to have certain fields ignored in compare

[ninja9578]

I have two fields that are equal to each other, except for one field. Is there a way to get the comparison to ignore that field? It's an iterator pointer, the iterator position should not matter when comparing objects to each other.

[PeejAvery]

I'm sorry, can you be more specific? Some code to help us understand what you are doing?

[ninja9578]

class foo {
	   private $_mapping = array(1,2,3);
	   private $_position = 0;
	   public function rewind() { 
		  $this -> _position = 0;
	   }
	   public function current() {
		  return $this -> _mapping[$this -> _position];
	   }
	   public function key() {
		  return $this -> _position;
	   }
	   public function next() {
		  ++$this -> _position;
	   }
	   public function valid() { 
		  return isset($this -> _mapping[$this -> _position]);
	   }
}

$test = new foo();
$test2 = new foo()
foreach($test as $i){}
echo '' . $test == $test2;   //false because _position is in different places, but the actual content in the same

[PeejAvery]

I'm sorry but without any explanation, this still isn't helping. Let me try to explain what isn't exactly understandable...

I have two fields that are equal to each other, except for one field.

• Two equal minus one results in none equal. So what exactly are you comparing?
• What do you mean by field? Are these <input> values passed to the server?

[ninja9578]

The mapping members are exactly the same, the _position item is different, but does not affect the "value" of the object publicly. I want the $test == $test2 to be true.

I want it be be the equivalent of this

bool operator == (const foo & $bar){
   return $bar -> _mapping == $this -> _mapping;
}