Question

我正在寻找一种方法来找到外部网站的最后一个分页值。使用get_file_contents我得到以下结果，但我怎样才能获得值＆＃34; 9＆＃34;就在下一个

之前

DOMElement Object ( [tagName] => ul 
[schemaTypeInfo] => [nodeName] => ul 
[nodeValue] => Prev 1 2 3 4 .. 9 Next 
[nodeType] => 1 [parentNode] => (object value omitted) 
[childNodes] => (object value omitted) 
[firstChild] => (object value omitted) [lastChild] => (object value omitted) 
[previousSibling] => [attributes] => (object value omitted) 
[ownerDocument] => (object value omitted) 
[namespaceURI] => [prefix] => [localName] => ul [baseURI] => 
[textContent] => Prev 1 2 3 4 .. 9 Next )

Answer 1

如果我是你，我会首先将textContent与空格分开。然后答案是[Next Key - 1]。

$textContent = " Prev 1 2 3 4 .. 9 10 Next ";
$arr = explode(' ', $textContent);

if ($key = array_search('Next', $arr)) {
echo $arr[$key - 1];  
}
// output : 10

Answer 2

如果字符串末尾始终有Next，您可能希望preg_match()使用以下RegExp：([0-9]+) Next nodeValue键，如下所示：< / p>

$found = preg_match("#([0-9]+) Next#", $domElement['nodeValue'], $matches)

然后if ($found) {}检查$matches[1]

中的内容

使用php file_get_contents获取分页的最后一页值

2 个答案: