php dom scraping - 抓取产品价格的最佳方法

发布于 2024-12-20 04:20:55 字数 637 浏览 3 评论 0原文

我正在使用 simpleHtmlDom 进行一些基本的屏幕抓取。不过，我在获取产品价格方面遇到了一些问题。有时我可以让它工作，有时却不能。另外，有时我会得到多个价格...例如，网站上有类似“通常为 100 美元...现在为 79.99 美元”的内容，有什么建议吗？目前，我正在使用这个：

$prices = array();
$prices[] = $html->find("[class*=price]", 0)->innertext;
$prices[] = $html->find("[class*=msrp]", 0)->innertext;
$prices[] = $html->find("[id*=price]", 0)->innertext;
$prices[] = $html->find("[id*=msrp]", 0)->innertext;
$prices[] = $html->find("[name*=price]", 0)->innertext;
$prices[] = $html->find("[name*=msrp]", 0)->innertext;

维多利亚的秘密（Victoria Secret）是我不知道如何获取价格的一个网站......价格看起来只是在随机 HTML 中浮动。

原文

I'm using simpleHtmlDom to do some basic screen scraping. I'm having some problems with grabbing product prices though. Sometimes I can get it to work, sometimes I can't. Also, sometimes I'm getting multiple prices... say for example the website has something like "normally $100... now $79.99" Any suggestions out there? Currently, I'm using this:

$prices = array();
$prices[] = $html->find("[class*=price]", 0)->innertext;
$prices[] = $html->find("[class*=msrp]", 0)->innertext;
$prices[] = $html->find("[id*=price]", 0)->innertext;
$prices[] = $html->find("[id*=msrp]", 0)->innertext;
$prices[] = $html->find("[name*=price]", 0)->innertext;
$prices[] = $html->find("[name*=msrp]", 0)->innertext;

One website that I have no idea of how to grab the price from is Victoria Secret.... the price looks like it's just floating around in random HTML.

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清风挽心 2024-12-27 04:20:55

首先，不要使用 simplehtmldom。使用内置的 dom 函数或基于它们的库。如果您想从页面中提取所有价格，您可以尝试如下操作：

$html = "<html><body>normally $100... now $79.99</body></html>";
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DomXpath($dom);

foreach($xpath->query('//text()[contains(.,"$")]') as $node){
    preg_match_all('/(\$[\d,.]+)/', $node->nodeValue, $m);
    print_r($m);
}

First of all, don't use simplehtmldom. Use the built in dom functions or a library that's based on them. If you want to extract all prices from a page you could try something like this:

$html = "<html><body>normally $100... now $79.99</body></html>";
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DomXpath($dom);

foreach($xpath->query('//text()[contains(.,"$")]') as $node){
    preg_match_all('/(\$[\d,.]+)/', $node->nodeValue, $m);
    print_r($m);
}

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