您会踢自己。 ’\n’应该是 \n ！这是一个完整的示例：

You're going to kick yourself. '\n' should be "\n"! Here's a full example:

$Dom = new DOMDocument('1.0', 'utf-8');
$Dom->loadXML(
'<test>
    Line1
    Line2
    Line3
</test>');

$value = $Dom->documentElement->nodeValue;
$lines = explode("\n", $value);
$lines = array_map('trim', $lines); // remove leading and trailing whitespace
$lines = array_filter($lines); // remove empty elements

echo '<ul>';
foreach($lines as $line) {
    echo '<li>', htmlentities($line), '</li>';
}
echo '</ul>';