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How should parse with PHP (simple html dom parser) background images and other images of webpage?

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佛祖请我去吃肉
佛祖请我去吃肉 2020-12-18 15:46

How should parse with PHP (simple html dom/etc..) background and other images of webpage?

case 1: inline css
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  • 一向
    2020-12-18 16:05

    For Case 1:

    // Create DOM from URL or file 
$html = file_get_html('http://www.google.com/');

// Get the style attribute for the item
$style = $html->getElementById("id100")->getAttribute('style');

// $style = background:url(/mycar1.jpg)
// You would now need to put it into a css parser or do some regular expression magic to get the values you need.

    For Case 2/3:

    // Create DOM from URL or file
$html = file_get_html('http://www.google.com/');

// Get the Style element
$style = $html->find('head',0)->find('style');

// $style now contains an array of style elements within the head. You will need to work out using attribute selectors what whether an element has a src attribute, if it does download the external css file and parse (using a css parser), if it doesnt then pass the innertext to the css parser.
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  • 不思量自难忘°
    2020-12-18 16:23

    To extract <img> from the page you can try something like:

    $doc = new DOMDocument(); 
$doc->loadHTML("<html><body>Foo<br><img src=\"bar.jpg\" title=\"Foo bar\" alt=\"alt\"></body></html>"); 
$xml = simplexml_import_dom($doc);
$images = $xml->xpath('//img'); 
foreach ($images as $img) 
    echo $img['src'] . ' ' . $img['alt'] . ' ' . $img['title'];

    See doc for DOMDocument for more details.

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