【问题标题】:PHP cURL Website scraping not workingPHP cURL网站抓取不起作用
【发布时间】:2015-03-30 17:05:44
【问题描述】:

我有一个基于 cURL 的代码来从网站获取产品价格。我想从http://www.snapdeal.com/product/apple-iphone-5s-16-gb/1302850866抓取结果

价格放置在:

<div class="prodbuy-price">
<div id="mrp-price-outer" class="">
<div id="seller-price-outer" class="">
<div id="offer-price-id">
<meta content="INR" itemprop="priceCurrency">
<strong class="voucherPrice">
Rs
<span id="selling-price-id" itemprop="price">36500</span>
</strong>

我获取价格的代码是:

<?php
$curl = curl_init('http://www.snapdeal.com/product/apple-iphone-5s-16-gb/1302850866');
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl,CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');

$page = curl_exec($curl);

if(!empty($curl)){ //if any html is actually returned

    $pokemon_doc = new DOMDocument;
    libxml_use_internal_errors(true);
    $pokemon_doc->loadHTML($page);
    libxml_clear_errors(); //remove errors for yucky html

    $pokemon_xpath = new DOMXPath($pokemon_doc);

   // $price = $pokemon_xpath->evaluate('string(//div[@class="prices"]/meta[@itemprop="price"]/@content)');
   // echo $price;

    $rupees = $pokemon_xpath->evaluate('string(//div[@class="prodbuy-price"]/span[@itemprop="price"])');
    echo $rupees;
}
else {
    print "Not found";
}
?>

我没有收到任何错误,也没有显示任何数据(价格)。我无法追踪任何错误。

【问题讨论】:

  • 在 span 之前尝试一个额外的斜线以获得任何死者。一个斜线是直接死者。
  • 是的,它运行良好。谢谢你,我可能没有发现那个愚蠢的错误。非常感谢!

标签: php curl web-scraping


【解决方案1】:

我犯了一个非常愚蠢的错误:添加一个额外的“/”已经解决了这个问题。感谢@DaveCoast。新代码是

<?php
$curl = curl_init('http://www.snapdeal.com/product/apple-iphone-5s-16-gb/1302850866');
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl,CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');

$page = curl_exec($curl);

if(!empty($curl)){ //if any html is actually returned

    $pokemon_doc = new DOMDocument;
    libxml_use_internal_errors(true);
    $pokemon_doc->loadHTML($page);
    libxml_clear_errors(); //remove errors for yucky html

    $pokemon_xpath = new DOMXPath($pokemon_doc);

   // $price = $pokemon_xpath->evaluate('string(//div[@class="prices"]/meta[@itemprop="price"]/@content)');
   // echo $price;

    $rupees = $pokemon_xpath->evaluate('string(//div[@class="prodbuy-price"]//span[@itemprop="price"])');
    echo $rupees;
}
else {
    print "Not found";
}
?>

希望这对某人有所帮助!

【讨论】:

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