Creating a priority queue class in PHP - php

Question

I am attempting to create a priority queue class with array object in PHP. I know there is the SplPriorityQueue in PHP, but I am trying to practice object oriented programming here. Priority Queues have data and priority level, so I have a rough MyQueue class that implements these attributes. I am not sure if I am going in the right direction here. I have not worked with arrayObject's in PHP before.
public class MyQueue{
private string data;
private int priority;
myQueue = arrayObject(array(data => priority));
}

Answer 1

Priority queue class might look like this:
class MyQueue implements Iterator, Countable {
private $data;
public function __construct() {
$this->data = array();
}
function compare($priority1, $priority2) {}
function count() {
return count($this->data);
}
function extract() {
$result = $this->current();
$this->next();
return $result;
}
function current() {
return current($this->data). ' - ' .$this->key();
}
function key() {
return key($this->data);
}
function next() {
return next($this->data);
}
function insert($name, $priority) {
$this->data[$name] = $priority;
asort($this->data);
return $this;
}
function isEmpty() {
return empty($this->data);
}
function recoverFromCorruption() {}
function rewind() {}
function valid() {
return (null === key($this->data)) ? false : true;
}
}
Usage:
$items = new MyQueue();
$items ->insert('Charles', 8)
->insert('James', 1)
->insert('Michael', 4)
->insert('John', 2)
->insert('David', 6)
->insert('William', 5)
->insert('Robert', 3)
->insert('Richard', 7);
foreach($items as $item) {
echo $item,'<br>';
}