doujia4759 2017-05-24 14:32
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正则表达式 - 如何重复正则表达式代码

I have on the site something like this:

 <div class="latestItemIntroText">

        <div class="itemLinks">
            <div class="share">Share</div>
            <div class="dummy-div"></div>

            <div class="addthis_sharing_toolbox"></div>

        </div>
     Lorem ipsum <br /><br />
     Lorem ipsum <br /><br />
     Lorem ipsum <br /><br />
     Lorem ipsum <br /><br />

 </div>

I need to have this text Lorem ipsum only. I tryed to do this regex code like this:

</div>([\s?]+[^<]+[<br?/?>]*[^<]+[<br?/?>]*[^<]+[<br?/?>]*[^<]+)</div>

I saw that this part I repeat many times :

[^<]+[<br?/?>]* --> because I don't know how many times there will be br with lorem pisum, maybe one, maybe 10 times... is there a possibility to short this regex?

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2条回答 默认 最新

  • doubao6681 2017-05-24 15:19
    关注

    Using Regex for HTML String is not a good approach, instead use DOMDocument for this.

    Try this code snippet here

    <?php
ini_set('display_errors', 1);
$string = <<<HTML
<div class="latestItemIntroText">

        <div class="itemLinks">
            <div class="share">Share</div>
            <div class="dummy-div"></div>

            <div class="addthis_sharing_toolbox"></div>

        </div>
     Lorem ipsum <br /><br />
     Lorem ipsum <br /><br />
     Lorem ipsum <br /><br />
     Lorem ipsum <br /><br />

 </div>
HTML;

$domDocument = new DOMDocument();
$domDocument->loadHTML($string);

$domXPath = new DOMXPath($domDocument);
$results = $domXPath->query('//div[@class="itemLinks"]');
$toRemove[]=$results->item(0);
foreach($toRemove as $removal)
{
    $removal->parentNode->removeChild($removal);
}
$results = $domXPath->query('//div[@class="latestItemIntroText"]');
print_r($results->item(0)->textContent);
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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