Question

我得到了這個錯誤「致命錯誤：調用未定義的方法DOMText :: getAttribute（）」與此代碼。我想捕捉鏈接的文本而不是源（我不知道它叫什麼）。有人請向我解釋我的錯誤，或告訴我一個不同的方式來做這件事嗎？這裏是我的代碼：

<?php 

$target_url = "SITE I WANT"; 
$userAgent = 'Googlebot/2.1 (http://www.googlebot.com/bot.html)'; 

// make the cURL request to $target_url 
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_USERAGENT, $userAgent); 
curl_setopt($ch, CURLOPT_URL,$target_url); 
curl_setopt($ch, CURLOPT_FAILONERROR, true); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
curl_setopt($ch, CURLOPT_AUTOREFERER, true); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER,true); 
curl_setopt($ch, CURLOPT_TIMEOUT, 10); 
$html= curl_exec($ch); 
if (!$html) { 
    echo "<br />cURL error number:" .curl_errno($ch); 
    echo "<br />cURL error:" . curl_error($ch); 
    exit; 
} 

// parse the html into a DOMDocument 
$dom = new DOMDocument(); 
@$dom->loadHTML($html); 

// grab all the on the page 
$xpath = new DOMXPath($dom); 
$hrefs = $xpath->evaluate("/html/body//a/text()"); 

for ($i = 0; $i < $hrefs->length; $i++) { 
    $href = $hrefs->item($i); 
    $url = $href->getAttribute('href'); 
    storeLink($url,$target_url); 
    echo "<br />Link stored: $url"; 
} 
$id = "12"; 
    $query = "DELETE FROM links WHERE id<=$id"; 
    if(!mysql_query($query)) 
     echo "DELETE failed: $query<br />" . 
     mysql_error() . "<br /><br />"; 
     ?> 

Answer 1

你去那裏：

$document = new DOMDocument(); 
$document->loadHTML($html); 
$selector = new DOMXPath($document); 
$anchors = $selector->query('/html/body//a'); 

foreach($anchors as $a) { 
    $text = $a->nodeValue; 
    $href = $a->getAttribute('href'); 
    echo($text . ' : ' . $href . '<br />'); 

}