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作为一个简单的例子,我试图获得所有包含电子邮件地址的dom对象。在PHP XPath中使用正则表达式 - >评估
$doc = new DOMDocument;
$doc->loadHTML($page);
$xpath = new DOMXPath($doc);
$body = $doc->getElementsByTagName('table')->item(0);
$query = "//text()[fn:matches(., '[\w\d\.-][email protected][\w\d\.-]+\.[a-zA-Z]{2,4}')]"; //
$entries = $xpath->evaluate($query, $body); //
foreach ($entries as $entry) {
echo "Found {$entry->textContent}<br>\n";
}
,我发现了错误:"DOMXPath::evaluate() [domxpath.evaluate]: xmlXPathCompOpEval: function matches bound to undefined prefix fn ..."
我也想尽了办法
//text()[
php:function('BooleanPregMatch', '[\w\d\.-][email protected][\w\d\.-]+\.[a-zA-Z]{2,4}', .)
]
没有成功。
我一直没能找到许多与fn:match或php:function相关的例子。任何援助将不胜感激。
我可以建议用双引号在matches()函数中尝试吗? – Scuzzy
你读过['DOMXPath :: registerPhpFunctions()'页面](http://www.php.net/manual/en/domxpath.registerphpfunctions.php)吗? – Phil