<?php
/**
 * Example : rewind();
 */
$arr = new SplFixedArray(5);
$arr[1] = 2;
$arr[4] = "foo";
$a = $arr->key();
var_dump($a);
echo "<br>";
$arr->next();
$a = $arr->key();
var_dump($a);
echo "<br>";
$arr->next();
$a = $arr->key();
var_dump($a);
echo "<br>";
$arr->rewind();
$a = $arr->key();
var_dump($a);
echo "<br>";
?>
The above example will output:
int(0) 
int(1) 
int(2) 
int(0)