除了CURLOPT_COOKIEFILE之外,我还如何使用 PHP curl 发送 Cookie?
我在提交表单后从网站上抓取一些内容。问题是脚本时不时地失败,比如说5次中有2次脚本失败。我正在使用php curl,COOKIEFILE和COOKIEJAR来处理cookie。但是,当我观察浏览器发送的标头(从浏览器访问目标网站并使用实时http标头时)和php发送的标头时,看到有很多差异。
我的浏览器发送的cookie变量比php curl多得多。我认为这种差异可能是因为javascript可以设置大多数cookie,但是我不确定这一点。
我正在使用以下代码进行抓取,并且我显示了浏览器和php curl的已发送标头:
$ckfile = tempnam ("/tmp", 'cookiename');
$url = 'https://www.domain.com/firststep';
$poststring = 'variable1=4&variable2=5';
$ch = curl_init ($url);
curl_setopt ($ch, CURLOPT_COOKIEJAR, $ckfile);
curl_setopt ($ch, CURLOPT_COOKIEFILE, $ckfile);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $poststring);
$output = curl_exec ($ch);
curl_close($ch);
$url = 'https://www.domain.com/nextstep';
$poststring = 'variableB1=4&variableB2=5';
$ch = curl_init ($url);
curl_setopt ($ch, CURLOPT_COOKIEJAR, $ckfile);
curl_setopt ($ch, CURLOPT_COOKIEFILE, $ckfile);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $poststring);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
$output = curl_exec ($ch);
$headers = curl_getinfo($ch, CURLINFO_HEADER_OUT);
curl_close($ch);
print_r($headers);
// Gives:
POST /d-cobs-web/doffers.html;jsessionid=7BC2A5277A4EB07D9A7237A707BE1366 HTTP/1.1
User-Agent: Mozilla
Host: domain.subdomain.nl
Accept: */*
Cookie: JSESSIONID=7BC2A5277A4EB07D9A7237A707BE1366; www-20480=MIFBNLFDFAAA
Content-Length: 187
Content-Type: application/x-www-form-urlencoded
// Where live http headers gives:
POST /d-cobs-web/doffers.html;jsessionid=7BC2A5277A4EB07D9A7237A707BE1366 HTTP/1.1
Host: domain.subdomain.nl
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: nl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Referer: https://domain.subdomain.nl/dd/doffers.html?returnUrl=https%3A%2F%2Fttcc.subdomain.nl%2Fdd%2Fpreferences.html%3FValueChanged%3Dfalse&BEGBA=&departureDate=13-06-2013&extChangeTime=&pax2=0&bp=&pax1=1&pax4=0&bk=&pax3=0&shopId=&xtpage=&partner=NSINT&bc=&xt_pc=&ov=&departureTime=&comfortClass=2&destination=DEBHF&thalysTicketless=&beneUser=&debugDOffer=&logonId=&valueChanged=&iDomesticOrigin=&rp=&returnTime=&locale=nl_NL&vu=&thePassWeekend=false&returnDate=&xtsite=&pax=A&lc2=&lc1=&lc4=&lc3=&lc6=&lc5=&BECRA=&passType2=&custId=&lc9=&iDomesticDestination=&passType1=A&lc7=&lc8=&origin=NLASC&toporef=&pid=&passType4=&returnTimeType=1&passType3=&departureTimeType=1&socusId=&idr3=&xtn2=&loyaltyCard=&idr2=&idr1=&thePassBusiness=false&cid=14812
Content-Length: 219
Cookie: subdomainPARTNER=NSINT; JSESSIONID=CB3FEB3AC72AD61A80BFED91D3FD96CA; www-20480=MHFBNLFDFAAA; campaignPos=5; www-47873=MGFBNLFDFAAA; __utma=1.993399624.1370027094.1370040145.1370082133.5; __utmc=1; __utmz=1.1370027094.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); BCSessionID=5dc05787-c2c8-43e1-9abe-93989970b087; BCPermissionLevel=PERSONAL; __utmb=1.1.10.1370082133
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
AJAXREQUEST=_viewRoot&doffersForm=doffersForm&doffersForm%3AvalueChanged=&doffersForm%3ArequestValid=true&javax.faces.ViewState=j_id3&doffersForm%3Aj_id937=doffersForm%3Aj_id937&valueChanged=false&AJAX%3AEVENTS_COUNT=1&
我想使用:
$headers = array();
$headers[] = 'Cookie: ' . $cookie;
和:
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
哪里:
$cookie = 'subdomainPARTNER=NSINT; JSESSIONID=CB3FEB3AC72AD61A80BFED91D3FD96CA; www-20480=MHFBNLFDFAAA; campaignPos=5; www-47873=MGFBNLFDFAAA; __utma=1.993399624.1370027094.1370040145.1370082133.5; __utmc=1; __utmz=1.1370027094.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); BCSessionID=5dc05787-c2c8-43e1-9abe-93989970b087; BCPermissionLevel=PERSONAL; __utmb=1.1.10.1370082133';
上面的cookie中的一些参数我也许可以从网站的内容中抓取,但不是全部。其中一些我也许可以从$ckfile中阅读,但我不知道该怎么做。特别是utma utmc,utmz,utmcsr,utmccn,utmcmd我无法从任何地方获得,我认为这些都是由javascript生成的。
问题 1:我是否在当前代码中对cookie处理做错了什么,因为很少有cookie变量由php curl发送,而浏览器发送的cookie变量更多?进一步:浏览器发送的标头和php curl之间的其他差异是否会成为返回正确内容的问题?
问题 2:缺少 cookie 变量是由于 javascript 设置了这些 cookie 吗?
问题 3:处理 Cookie 以确保将所有必需的 Cookie 发送到远程服务器的最佳方法是什么?
非常欢迎您的帮助!