我想要獲取內容和網址，包括所有其他 td 數據。我的代碼：$context = stream_context_create( array( "http" => array( "header" => "User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36" ) ));$htmlContent = file_get_contents("https://www.iana.org/domains/root/db", false, $context); $DOM = new DOMDocument();$DOM->loadHTML($htmlContent);$FirstdTable = $DOM->getElementsByTagName('table')->item(0);$Header = $FirstdTable->getElementsByTagName('th');$Detail = $FirstdTable->getElementsByTagName('td');//#Get header name of the tableforeach($Header as $NodeHeader) { $aDataTableHeaderHTML[] = trim($NodeHeader->textContent);}//#Get row data/detail table without header name as key$i = 0;$j = 0;foreach($Detail as $sNodeDetail){ $aDataTableDetailHTML[$j][] = trim($sNodeDetail->textContent); $i = $i + 1; $j = $i % count($aDataTableHeaderHTML) == 0 ? $j + 1 : $j;}電流輸出：Array( [0] => Array ( [0] => .aaa [1] => generic [2] => American Automobile Association, Inc. ) [1] => Array ( [0] => .aarp [1] => generic [2] => AARP ) [2] => Array ( [0] => .abarth [1] => generic [2] => Fiat Chrysler Automobiles N.V. )}我在這里想要：Array( [0] => Array ( [0] => .aaa [1] => generic [2] => American Automobile Association, Inc. [3] => https://www.iana.org/domains/root/db/aaa.html ) [1] => Array ( [0] => .aarp [1] => generic [2] => AARP [3] => https://www.iana.org/domains/root/db/aarp.html ) [2] => Array ( [0] => .abarth [1] => generic [2] => Fiat Chrysler Automobiles N.V. [3] => https://www.iana.org/domains/root/db/abarth.html )}
1 回答
鳳凰求蠱
TA貢獻1825條經驗 獲得超4個贊
目前，您只是獲取 all 中的所有文本內容<td>。并且它不會將鏈接包含在錨標記內。為此，您需要更深入地研究<td>.
這是使用以下方法來完成此操作的一種方法xpath：
$xpath = new DOMXpath($DOM);
$base = 'https://www.iana.org/';
foreach($Detail as $sNodeDetail)
{
$aDataTableDetailHTML[$j][] = trim($sNodeDetail->textContent);
if ($link = $xpath->evaluate("string(./span[contains(@class, 'domain')]/a/@href)", $sNodeDetail)) {
$aDataTableDetailHTML[$j][] = "{$base}{$link}";
}
$i = $i + 1;
$j = $i % count($aDataTableHeaderHTML) == 0 ? $j + 1 : $j;
}
基本上，查詢只是提取href當前<td>迭代中的值<span class="domain tld"><a href="xxxx">xxx</a></span>并獲取該href值。
另一種方法是迭代每個<tr>而不是每個<td>：
$aDataTableDetailHTML = [];
$DOM = new DOMDocument();
$DOM->loadHTML($htmlContent);
$xpath = new DOMXpath($DOM);
$base = 'https://www.iana.org/';
foreach($xpath->query('//table[@id="tld-table"]/tbody/tr') as $row) {
$domain = trim($xpath->evaluate("string(./td[1])", $row));
$type = $xpath->evaluate("string(./td[2])", $row);
$tld_manager = $xpath->evaluate("string(./td[3])", $row);
$url = $xpath->evaluate("string(./td[1]/span/a/@href)", $row);
$aDataTableDetailHTML[] = [$domain, $type, $tld_manager, "{$base}{$url}"];
}
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