Description:
------------
Hi,
It is hard to write and read this getter and setter codes:

private $_aProperty = "";

public getAProperty(){
    return $this->_aProperty;
}

public setAProperty($value){
    $this->_aProperty = $value;
}

And if we want to use this getter and setter, we will write like this:
$value = $anObject->getAProperty();
$anObject->setAProperty("something");

It is hard to read and confusing because of "set" and "get" prefixes. 
But if we have a "property" keyword, we can use same name without "get" and "set" prefixes.

class AClass
{
private $_name;
protected getName(){
    return $this->_name;
}
protected setName($value){
    $this->_name = $value
}
/*****/
public property Name get getName set setName;
/*****/
}

anObject = new AClass();
anObject->Name = "something"; //triggering setName function.
echo anObject->Name; //triggering getName function.

Regards..