我有一个网站,包含许多不同的产品页,每一页都有相同格式的图像。 我希望能够检查每一页的ur,以便我能够从每一页中检索每个图像的ur。 想法是为每一页打包,由热链接图像组成。
我知道,这项工作可以在营地进行,但我并不肯定如何拆除多链接的网页。 任何想法?
我有一个网站,包含许多不同的产品页,每一页都有相同格式的图像。 我希望能够检查每一页的ur,以便我能够从每一页中检索每个图像的ur。 想法是为每一页打包,由热链接图像组成。
我知道,这项工作可以在营地进行,但我并不肯定如何拆除多链接的网页。 任何想法?
我建议使用DOM教区,例如PHP本身。 例:
$page = file_get_contents( http://example.com/images.php );
$doc = new DOMDocument();
$doc->loadHTML($page);
$images = $doc->getElementsByTagName( img );
foreach($images as $image) {
echo $image->getAttribute( src ) . <br /> ;
}
你们可以经常使用一种表达方式,穿过页面来源,并穿透所有环流体。
这一格格外工作:<img[^>]+src=”(*?)
这项工作如何?
// <img[^>]+src="(.*?)"
//
// Match the characters "<img" literally «<img»
// Match any character that is not a ">" «[^>]+»
// Between one and unlimited times, as many times as possible, giving back as needed (greedy) «+»
// Match the characters "src="" literally «src="»
// Match the regular expression below and capture its match into backreference number 1 «(.*?)»
// Match any single character that is not a line break character «.*?»
// Between zero and unlimited times, as few times as possible, expanding as needed (lazy) «*?»
// Match the character """ literally «"»
Sample PHP代码:
preg_match_all( /<img[^>]+src="(.*?)"/i , $subject, $result, PREG_PATTERN_ORDER);
for ($i = 0; $i < count($result[0]); $i++) {
// image URL is in $result[0][$i];
}
你们必须做一点更多的工作,解决像相对的URLs这样的问题。
我确实喜欢。 PHP Private RUS DOM Parser for matters such as this. gra光图像的例子在前页是正确的:
// Create DOM from URL or file
$html = file_get_html( http://www.google.com/ );
// Find all images
foreach($html->find( img ) as $element)
echo $element->src . <br> ;
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