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? ??? ?? PHP ???? ?? ??? ?? ? ????? ???? ???? ?? DOM ??? ???? ??? PHP ???? ??? ??? ? ?????

?? ??? ?? ? ????? ???? ???? ?? DOM ??? ???? ??? PHP ???? ??? ??? ? ?????

Nov 08, 2024 am 07:11 AM

How can I build a robust PHP crawler using DOM manipulation for extracting data from web pages with multiple links?

PHP? ??? ???: ?? ???

?? ??? ??? ? ????? ???? ???? ?? PHP? ??? ???? ?????. ? ?? ?? ??? ?? ???? ???? ???? HTML ?? ??? ?? ?? ????? ???? ?? ??? ?? ?????.

DOM ?? ??? ??

Tatu? DOM ?? ???? ??? ?????. ?? ? ?? ??. ??? ??? ??? ????.

function crawl_page($url, $depth = 5)
{
    static $seen = array();
    if (isset($seen[$url]) || $depth === 0) {
        return;
    }

    $seen[$url] = true;

    $dom = new DOMDocument('1.0');
    @$dom->loadHTMLFile($url);

    $anchors = $dom->getElementsByTagName('a');
    foreach ($anchors as $element) {
        $path = $element->getAttribute('href');
        if (0 !== strpos($path, 'http')) {
            $path = '/' . ltrim($path, '/');
            if (extension_loaded('http')) {
                $href = http_build_url($url, array('path' => $path));
            } else {
                $parts = parse_url($url);
                $href = $parts['scheme'] . '://';
                if (isset($parts['user']) && isset($parts['pass'])) {
                    $href .= $parts['user'] . ':' . $parts['pass'] . '@';
                }
                $href .= $parts['host'];
                if (isset($parts['port'])) {
                    $href .= ':' . $parts['port'];
                }
                $href .= dirname($parts['path'], 1).$path;
            }
        }
        crawl_page($href, $depth - 1);
    }
    echo "URL:", $url, PHP_EOL, "CONTENT:", PHP_EOL, $dom->saveHTML(), PHP_EOL, PHP_EOL;
}

? ??? ??? https, ???, ?? ? ??? ??? ??? URL ????? ?????.

??? ??

George? URL ??? ???? ?? ?? URL? URL ?? ?? ???? ?? ??? ??? ??????. ????? ? ??? ???? ?? URL? ???? ?????.

?? ??

??? ??? ???? ??? STDOUT? ????? ??? ??? ???? ????? ? ????.

??? ??? ??? ?????? ? DOM ?? ???? PHP? ?? ??? ?? ?????? ???? ???? ?? ??? ???? ?????.

? ??? ?? ??? ?? ? ????? ???? ???? ?? DOM ??? ???? ??? PHP ???? ??? ??? ? ?????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

? ????? ??
? ?? ??? ????? ???? ??? ??????, ???? ?????? ????. ? ???? ?? ???? ?? ??? ?? ????. ???? ??? ???? ???? ??? ?? admin@php.cn?? ?????.

? AI ??

Undresser.AI Undress

Undresser.AI Undress

???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

Video Face Swap

Video Face Swap

??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

???

??? ??

???++7.3.1

???++7.3.1

???? ?? ?? ?? ???

SublimeText3 ??? ??

SublimeText3 ??? ??

??? ??, ???? ?? ????.

???? 13.0.1 ???

???? 13.0.1 ???

??? PHP ?? ?? ??

???? CS6

???? CS6

??? ? ?? ??

SublimeText3 Mac ??

SublimeText3 Mac ??

? ??? ?? ?? ?????(SublimeText3)

???

??? ??

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