php - 使用 XPATH 删除

Question

我使用 xpath 删除 <p>&nbsp;</p>

    $nodeList = $xpath->query("//p[text()=\"\xC2\xA0\"]"); #  
    foreach($nodeList as $node) 
    {
        $node->parentNode->removeChild($node);
    }

但它不会删除这个，

<p><strong><br /> &nbsp;</strong></p>

还是这种，

<p><strong>&nbsp;</strong></p>

我怎样才能删除它们？

或者也许是我应该使用的正则表达式？

Answer 1

试试

$nodeList = $xpath->query("//p[normalize-space(.)=\"\xC2\xA0\"]"); #  
foreach($nodeList as $node) 
{
    $node->parentNode->removeChild($node);
}

---

引用 from the docs

The normalize-space function returns the argument string with whitespace normalized by stripping leading and trailing whitespace and replacing sequences of whitespace characters by a single space.