php - 简单的HTML dom CSS选择器不起作用

关于http://simplehtmldom.sourceforge.net/

我有以下代码：

require_once('simple_html_dom.php');

$x = '<span style="font-family:symbol">&#174;</span>';
$dom = str_get_html($x);
$lis = $dom->find('[style=~font-family:symbol]');
print_r($lis);

它将尝试使用css选择器查​​找样式为font-family：symbol的标签。

但是，这什么也不会返回。

我的代码有什么问题？

最佳答案

请仔细阅读the doc ...可用的属性过滤器为：

+--------------------+----------------------------------------------------------------------------------------+
|       Filter       |                                      Description                                       |
+--------------------+----------------------------------------------------------------------------------------+
| [attribute]        | Matches elements that have the specified attribute.                                    |
| [!attribute]       | Matches elements that don't have the specified attribute.                              |
| [attribute=value]  | Matches elements that have the specified attribute with a certain value.               |
| [attribute!=value] | Matches elements that don't have the specified attribute with a certain value.         |
| [attribute^=value] | Matches elements that have the specified attribute and it starts with a certain value. |
| [attribute$=value] | Matches elements that have the specified attribute and it ends with a certain value.   |
| [attribute*=value] | Matches elements that have the specified attribute and it contains a certain value.    |
+--------------------+----------------------------------------------------------------------------------------+

因此，以您的情况为例，您可以使用最后一个示例[下面的程序已经过测试并且可以正常工作]：

$lis = $dom->find('[style*="font-family:symbol"]');