Exemplos de get_xpath_async em PHP

Exemplo n.º 1

Arquivo: intro-php55.php Projeto: mpyw/co

    curl_setopt_array($ch, $options);
    return $ch;
}
function get_xpath_async($url)
{
    $dom = new \DOMDocument();
    @$dom->loadHTML((yield curl_init_with($url)));
    (yield Co::RETURN_WITH => new \DOMXPath($dom));
}
var_dump(Co::wait(['Delay 5 secs' => function () {
    echo "[Delay] I start to have a pseudo-sleep in this coroutine for about 5 secs\n";
    for ($i = 0; $i < 5; ++$i) {
        (yield Co::DELAY => 1);
        if ($i < 4) {
            printf("[Delay] %s\n", str_repeat('.', $i + 1));
        }
    }
    echo "[Delay] Done!\n";
}, "google.com HTML" => curl_init_with("https://google.com"), "Content-Length of github.com" => function () {
    echo "[GitHub] I start to request for github.com to calculate Content-Length\n";
    $content = (yield curl_init_with("https://github.com"));
    echo "[GitHub] Done! Now I calculate length of contents\n";
    (yield Co::RETURN_WITH => strlen($content));
}, "Save mpyw's Gravatar Image URL to local" => function () {
    echo "[Gravatar] I start to request for github.com to get Gravatar URL\n";
    $xpath = (yield get_xpath_async('https://github.com/mpyw'));
    $src = $xpath->evaluate('string(//img[contains(@class,"avatar")]/@src)');
    echo "[Gravatar] Done! Now I download its data\n";
    (yield curl_init_with($src, [CURLOPT_FILE => fopen('/tmp/mpyw.png', 'wb')]));
    echo "[Gravatar] Done! Saved as /tmp/mpyw.png\n";
}]));

Exemplo n.º 2

Arquivo: intro-php7.php Projeto: mpyw/co

    $options = array_replace([CURLOPT_URL => $url, CURLOPT_RETURNTRANSFER => true], $options);
    curl_setopt_array($ch, $options);
    return $ch;
}
function get_xpath_async(string $url) : \Generator
{
    $dom = new \DOMDocument();
    @$dom->loadHTML((yield curl_init_with($url)));
    return new \DOMXPath($dom);
}
var_dump(Co::wait(['Delay 5 secs' => function () {
    echo "[Delay] I start to have a pseudo-sleep in this coroutine for about 5 secs\n";
    for ($i = 0; $i < 5; ++$i) {
        (yield Co::DELAY => 1);
        if ($i < 4) {
            printf("[Delay] %s\n", str_repeat('.', $i + 1));
        }
    }
    echo "[Delay] Done!\n";
}, "google.com HTML" => curl_init_with("https://google.com"), "Content-Length of github.com" => function () {
    echo "[GitHub] I start to request for github.com to calculate Content-Length\n";
    $content = (yield curl_init_with("https://github.com"));
    echo "[GitHub] Done! Now I calculate length of contents\n";
    return strlen($content);
}, "Save mpyw's Gravatar Image URL to local" => function () {
    echo "[Gravatar] I start to request for github.com to get Gravatar URL\n";
    $src = ((yield get_xpath_async('https://github.com/mpyw')))->evaluate('string(//img[contains(@class,"avatar")]/@src)');
    echo "[Gravatar] Done! Now I download its data\n";
    (yield curl_init_with($src, [CURLOPT_FILE => fopen('/tmp/mpyw.png', 'wb')]));
    echo "[Gravatar] Done! Saved as /tmp/mpyw.png\n";
}]));