/**
* Compare two iterators.
*
* @param \Iterator $lhs Left Hand Side Iterator
* @param \Iterator $rhs Right Hand Side Iterator
* @param boolean $identical Whether to use areEqual() or areIdentical()
*
* @return boolean whether both iterators are equal/identical
*
* @note If one implements RecursiveIterator the other must do as well.
* And if both do then a recursive comparison is being used.
*/
public static function compareIterators(\Iterator $lhs, \Iterator $rhs, $identical = false)
{
if ($lhs instanceof \RecursiveIterator) {
if ($rhs instanceof \RecursiveIterator) {
$it = new RecursiveDualIterator($lhs, $rhs, self::CURRENT_0 | self::KEY_0);
$it = new RecursiveCompareDualIterator($it);
} else {
return false;
}
} else {
$it = new DualIterator($lhs, $rhs, self::CURRENT_0 | self::KEY_0);
}
if ($identical) {
foreach ($it as $n) {
if (!$it->areIdentical()) {
return false;
}
}
} else {
foreach ($it as $n) {
if (!$it->areEqual()) {
return false;
}
}
}
return $identical ? $it->areIdentical() : $it->areEqual();
}
function test($a, $b, $identical = false)
{
var_dump(DualIterator::compareIterators(new RecursiveArrayIterator($a), new RecursiveArrayIterator($b), $identical));
}