如何使用cURL 檢索頁面內(nèi)容

在從Google 搜尋結(jié)果中提取內(nèi)容時，您可能會遇到諸如和使用cURL 時出現(xiàn)「頁面已移動」錯誤。通常，這些障礙是由於編碼的查詢字串引起的。

要有效檢索所需的內(nèi)容，請考慮以下 PHP 實(shí)作：

<code class="php">/**
 * Get a web file (HTML, XHTML, XML, image, etc.) from a URL.  Return an
 * array containing the HTTP server response header fields and content.
 */
function get_web_page( $url )
{
    $user_agent='Mozilla/5.0 (Windows NT 6.1; rv:8.0) Gecko/20100101 Firefox/8.0';

    $options = array(

        CURLOPT_CUSTOMREQUEST  => "GET",        // set request type post or get
        CURLOPT_POST           => false,        // set to GET
        CURLOPT_USERAGENT      => $user_agent, // set user agent
        CURLOPT_COOKIEFILE     => "cookie.txt", // set cookie file
        CURLOPT_COOKIEJAR      => "cookie.txt", // set cookie jar
        CURLOPT_RETURNTRANSFER => true,     // return web page
        CURLOPT_HEADER         => false,    // don't return headers
        CURLOPT_FOLLOWLOCATION => true,     // follow redirects
        CURLOPT_ENCODING       => "",       // handle all encodings
        CURLOPT_AUTOREFERER    => true,     // set referer on redirect
        CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect
        CURLOPT_TIMEOUT        => 120,      // timeout on response
        CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
    );

    $ch      = curl_init( $url );
    curl_setopt_array( $ch, $options );
    $content = curl_exec( $ch );
    $err     = curl_errno( $ch );
    $errmsg  = curl_error( $ch );
    $header  = curl_getinfo( $ch );
    curl_close( $ch );

    $header['errno']   = $err;
    $header['errmsg']  = $errmsg;
    $header['content'] = $content;
    return $header;
}</code>

範(fàn)例：

<code class="php">// Read a web page and check for errors:

$result = get_web_page( $url );

if ( $result['errno'] != 0 )
    ... error: bad url, timeout, redirect loop ...

if ( $result['http_code'] != 200 )
    ... error: no page, no permissions, no service ...

$page = $result['content'];</code>

以上是如何使用 cURL 處理 URL 重新導(dǎo)向和頁面移動錯誤？的詳細(xì)內(nèi)容。更多資訊請關(guān)注PHP中文網(wǎng)其他相關(guān)文章！