dougu1896 2013-12-18 12:08
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我如何从这个大文本中获取此字符串？ [关闭]

I have this HTML content.. 

<!DOCTYPE html>
<html lang="en">
<head>

 <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
 <meta http-equiv="X-UA-Compatible" content="IE=edge" />
 <meta name="pageImpressionID" content="8d0c0cc6-93b3-4d6e-a8c0-9d4552c6d1db" />
 <meta name="pageKey" content="uas-oauth2-auth-code-authorize" >
 <meta name="analyticsURL" content="/analytics/noauthtracker" />
 //.......... Lot more

I need to grab 8d0c0cc6-93b3-4d6e-a8c0-9d4552c6d1db from it. I tried strip_tags but all data was stripped off. Any ideas ?

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2条回答 默认 最新

  • duanhai4046 2013-12-18 12:12
    关注

    Use a DOM parser such as DOMDocument to extract the required data. Here's how you do it:

    • Get all the <meta> tags using getElementsByTagName()
    • Loop through them and check if the name attribute of the tag is pageImpressionID
    • If it is, simply echo the content attribute

    Code:

    $dom = new DOMDocument;
$dom->loadHTML($html);
foreach ($dom->getElementsByTagName('meta') as $tag) {
    if ($tag->getAttribute('name') === 'pageImpressionID') {
        echo $tag->getAttribute('content');
    }
}

    Output:

    8d0c0cc6-93b3-4d6e-a8c0-9d4552c6d1db
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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