我正在编写一个只回应价格的脚本.
如果我做:
$alttag = $oNode['p'];
echo $alttag;
它将回显< p>< / p>中的所有内容.
所以它会回应:
cafénevrij的roodmerk
500克
2 pakken
prijs每公斤1,99
199
从网站上,所以你可以看到它的回声199,这是价格,但首先我只需要在< p>< / p>中的199而且我要 .或者,在199之间,因此它将显示1,99或1.99.
如果我做:
$alttag = $oNode['p sup'];
echo $alttag;
它只会回复< sup>< / sup>中的99.
如果我做:
$alttag = $oNode['p sup'];
$maintag = $oNode['p']->attr('alt');
echo $maintag . $alttag;
嗯……这没什么
我怎么才能得到1和99并且放置一个.或者,它之间看起来像1,99或1.99?
<div class="item-prijs">
<p>
<cufon class="cufon cufon-canvas" alt="1" style="width: 27px; height: 42px; ">
<canvas width="47" height="43" style="width: 47px; height: 43px; top: -1px; left: -2px; "></canvas>
<cufontext>1</cufontext>
</cufon>
<sup>
<cufon class="cufon cufon-canvas" alt="99" style="width: 24px; height: 20px; ">
<canvas width="35" height="21" style="width: 35px; height: 21px; top: -1px; left: -1px; ">
</canvas><cufontext>99</cufontext>
</cufon>
</sup>
</p>
</div>
完整代码:不包含php函数和数据库连接.
// Extracts offers from html and return in array
function extractSparOffers($url)
{
loadPqUrl($url);
//Test $dates = extractDateRange(pq('.contentdatagrid td:first'));
$oNodes = pq('.item');
if($oNodes->count() == 0) throw new Exception('No offers were found.');
foreach($oNodes as $oNode) {
$oNode = pq($oNode);
//Test $titleDescCell = $oNode['input#a']->parent();
//Test $titleDescCell['img, input']->remove();
$priceCell = $oNode['span.price1']->parent()->parent();
// Get title and description
$data['title'] = $oNode['.item-content h3'];
$data['description'] = $oNode['.item-content p'];
// Get prices (page may contain price ranges)
$alttag = $oNode['p sup'];
$maintag = $oNode['p']->attr('alt');
echo $maintag;
//echo $alttag;
//$alttags=preg_match_all('/<img[^>]*alt="([^"]*)"/i', $html, $matches);
$none = "0.00";
$data['priceBefore'] = $none;
$data['priceAfter'] = $alttag;
// $oNode['item-prijs p.sup.cufon cufon-canvas']->attr('alt') ;
// Get image
$imgNode = $oNode['img:only-child'];
if(count($imgNode) > 0)
$img = getimg('http://www.spar.nl/' . $oNode['img:only-child']->
attr('src'));
else $img = '';
$data['image'] = $img;
//Test $data['dateStart'] = $dates['start'];
//Test $data['dateEnd'] = $dates['end'];
$date =date('Y-m-d');
$data['dateStart'] = date('Y-m-d', strtotime("yesterday"));
$data['dateEnd'] = date('Y-m-d', strtotime("tomorrow"));
$data = formatOfferStrings($data);
$odTotal[] = $data;
}
return $odTotal;
}
spiderInit();
$offerData = extractSparOffers('http://www.spar.nl/aanbiedingen/');
//Test processNewOffers('Spar', $offerData, $offerData[0]['dateStart']);
processNewOffers('Spar', $offerData, $dates['start']);
?>
最佳答案 那么这基本上是价格的网络爬虫吗?我建议你研究一下使用PHP的DOMDocument库解析XML(实际上是哪个XHTML).然后你可以这样做:
//create a new DOMDocument object
$xmlDoc = new DOMDocument();
//load your html for parsing
$xmlDoc->loadHTML("<html><body>Your HTML Code<br></body></html>");
//select the element that you want the attribute from...you may need to use $xmlDoc->getElementsByTagName('p');
$p_element = $xmlDoc->getElementById('yourtag');
//get the attribute alt of the selected element
$alt = $p_element->getAttribute('alt');
//show alt attribute value
echo $alt;
这只是伪代码,并不能解决您的问题,但它似乎是一个比您尝试使用的解析器更好的解决方案.查看这些链接以获取更多信息(我希望这会有所帮助):
http://www.php.net/manual/en/domdocument.construct.php
http://php.net/manual/en/domelement.getattribute.php
http://www.php.net/manual/en/domdocument.getelementsbytagname.php