In PHP, how do I iterate over objects with SPL?

PHP, SPL, Iterator, Object Iteration

This example illustrates how to iterate over objects using the Standard PHP Library.


        <?php
        class MyIterator implements Iterator {
            private $data = [];
            private $index = 0;

            public function __construct($data) {
                $this->data = $data;
            }

            public function current() {
                return $this->data[$this->index];
            }

            public function key() {
                return $this->index;
            }

            public function next() {
                ++$this->index;
            }

            public function rewind() {
                $this->index = 0;
            }

            public function valid() {
                return isset($this->data[$this->index]);
            }
        }

        $data = ['first' => 'apple', 'second' => 'banana', 'third' => 'cherry'];
        $iterator = new MyIterator($data);

        foreach ($iterator as $key => $value) {
            echo "$key: $value<br>";
        }
        ?>

In PHP, how do I iterate over objects with SPL?

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In PHP, how do I iterate over objects with SPL?

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