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  1. <?php
  2.  
  3. class myIterator implements Iterator {
  4.     private $position = 0;
  5.     private $keys;
  6.  
  7.     public function __construct(array $arr) {
  8.         $this->array = $arr;
  9.         $this->keys = array_keys($arr);
  10.         $this->position = 0;
  11.     }
  12.  
  13.     function rewind() {
  14.         $this->position = 0;
  15.     }
  16.  
  17.     function current() {
  18.         return $this->array[$this->key()];
  19.     }
  20.  
  21.     function key() {
  22.         return $this->keys[$this->position];
  23.     }
  24.  
  25.     function next() {
  26.         ++$this->position;
  27.     }
  28.  
  29.     function valid() {
  30.         return isset($this->keys[$this->position]);
  31.     }
  32. }
  33.  
  34. $it = new myIterator(array(
  35.         'a' => "firstelement",
  36.         'b' => "secondelement",
  37.         'c' => "lastelement",
  38.     ));
  39.  
  40. foreach($it as $key => $value) {
  41.     var_dump($key, $value);
  42.     echo "\n";
  43. }
Success #stdin #stdout 0.02s 13112KB
comments (?)
stdin
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Standard input is empty
stdout
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string(1) "a"
string(12) "firstelement"

string(1) "b"
string(13) "secondelement"

string(1) "c"
string(11) "lastelement"
https://ideone.com/Fxt0j
language:
PHP (php 7.3.5)
created:
13 years ago
visibility:
public

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