簡單的HTML dom CSS選擇器不起作用

Question

參考http://simplehtmldom.sourceforge.net/

我有以下代碼：

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);

它將嘗試使用css選擇器查​​找樣式為font-family：symbol的標簽。

但是，這什么也不會返回。

我的代碼有什么問題？

Answer 1

請仔細閱讀文檔 ...可用的屬性過濾器為：

+--------------------+----------------------------------------------------------------------------------------+
|       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，以您的情況為例，您可以使用最后一個示例[下面的程序已經過測試並且有效]：

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

Answer 2

您尚未在XPath中引用字體。 find()調用應為

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