Comparing 2 objects PHP

Question

i need to compare 2 objects to remove duplicates / find new enteries.

The objects are not identical, but they contain the same username key

Here is the layou

Answer 1

No, there is no cleaner way, you have to loop over the properties. If that are not StdClass objects, I would add a custom compare method to their class:

class Person {

   protected $id;
   protected $name;
   protected $age;

   /**
    * Compares two persons an returns true if their name
    * and age equals.
    */
   public function equals(Person $b) {
       if($b->name === $this->name && $b->age === $this->age) {
           return TRUE;
       }
       return FALSE;
   }
}

Then use it like this:

$personA = DB::getPersonById(1);
$personB = DB::getPersonById(2);

if($personA->equals($personB)) {
    echo "They are equal";
}

---

However, beside from this, why not just removing the duplicates using SQL or even better use unique keys in the DB to avoid duplicates at all?