bug.php

<?php

$content = <<<'EOF'
Line 1
Line 2
Line 3
Line 4
EOF;

$tmpCsvFile = new SplTempFileObject();
$tmpCsvFile->fwrite($content);

$iterator = new CallbackFilterIterator($tmpCsvFile, function ($row) {
    return true;
});

echo 'Limit 2: ', iterator_count(new LimitIterator($iterator, 2)), ' ', iterator_count(new LimitIterator($tmpCsvFile, 2)), "\n";
echo 'Limit 3: ', iterator_count(new LimitIterator($iterator, 3)), ' ', iterator_count(new LimitIterator($tmpCsvFile, 3)), "\n";