Question

使用此代码

<?php
 /*GET ALL LINKS FROM http://www.w3schools.com/asp/default.asp*/ 
$page = file_get_contents('http://www.codacons.it/rassegna_quest.asp?idSez=14'); 
preg_match_all("/<a.*>(.*?)<\/a>/", $page, $matches, PREG_SET_ORDER); 
echo "All links : <br/>"; 
foreach($matches as $match){ 
    echo $match[1]."<br/>"; 
} 
?>

但它不会从此页http://www.codacons.it/rassegna_quest.asp?idSez=14

解析此链接

'Questionario'：OFFICINE PER L'ASSISTENZA E MANUTENZIONI VEICOLI
'Questionario'：RIVENDITORE自动使用
'Questionario'：RACCOLTA RICICLATA DEI RIFIUTI DI IMBALLAGGI in PLASTICA
'Questionario'：DONNE E POLITICA

为什么???

Answer 1

我想我应该从典型的“Don't parse HTML with regex”开始。使用XPath（使用DOMXpath）这很容易：

$dom = new DOMDocument();
@$dom->loadHTML($page);
$dom_xpath = new DOMXPath($dom);
$entries = $dom_xpath->evaluate("//a");
foreach ($entries as $entry) {
    print $entry->nodeValue;
}

但如果你必须走正则路线，我想贪婪的明星.*就是你问题的根源。试试这个：

preg_match_all("@<a[^>]+>(.+?)</a>@/", $page, $matches, PREG_SET_ORDER);

Answer 2

啊，不管......

$page = file_get_contents('http://www.codacons.it/rassegna_quest.asp?idSez=14');
preg_match_all('#<a href="articolo(.*?)" title="Dettaglio notizia">(.*?)</a>#is', $page, $matches);

$count = count($matches[1]);
for($i = 0; $i < $count; $i++){
    echo '<a href="articolo'.$matches[1][$i].'">'.trim(strip_tags(preg_replace('#(\s){2,}#is', '', $matches[2][$i]))).'</a>'; 
}

结果：

<a href="articolo.asp?idInfo=138400&amp;id=">'Questionario':OFFICINE PER L'ASSISTENZA E MANUTENZIONI VEICOLI</a>
<a href="articolo.asp?idInfo=138437&amp;id=">'Questionario':RIVENDITORE AUTO USATE</a>
<a href="articolo.asp?idInfo=127900&amp;id=">'Questionario':RACCOLTA RICICLATA DEI RIFIUTI DI IMBALLAGGI IN PLASTICA</a>
<a href="articolo.asp?idInfo=138861&amp;id=">'Questionario':DONNE E POLITICA</a>

用PHP解析ASP页面

2 个答案: