[英]Trying to replicate web request (image upload) using php and curl
我正在嘗試將圖片上傳到網站,但該網站沒有為此提供api函數。 我設法使用Charles Proxy獲取請求信息:
這是我的PHP代碼:
$post_data = array(
'photo' => '@'.$filename,
'_csrftoken' => '5ebcec201972ab6304a33d418129cd13',
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://example.com/api/v1/upload/photo/');
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Host: example.com'
));
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_COOKIEFILE, 'C:/xampp/htdocs/example/cookies.txt');
$response = curl_exec($ch);
$http = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
print_r($response);
echo $http;
這將返回http代碼為500的響應。
您沒有正確發布。
您不需要Charles Proxy
在進行上傳(chrome,firefox)之前,
在右側,它將顯示請求和響應頭
您需要使您的請求看起來完全像那個請求標題
您必須注意重定向(例如302)和在重定向過程中添加的Cookie。
您將要查看“請求和響應頭”,以防無法解決問題。
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_FAILONERROR,true);
您可能想要獲取Cookie。 創建另一個curl請求以獲取上載頁面。
捕獲cookie:在curl請求上傳頁面時獲得Response標頭($ head)
$data = curl_exec($ch);
if (curl_errno($ch)){
$data .= 'Retreive Base Page Error: ' . curl_error($ch);
}
else {
$skip = intval(curl_getinfo($ch, CURLINFO_HEADER_SIZE));
$head = substr($data,0,$skip);
$e = 0;
while(true){
$s = strpos($head,'Set-Cookie: ',$e);
if (!$s){break;}
$s += 12;
$e = strpos($head,';',$s);
$cookie = substr($head,$s,$e-$s) ;
$s = strpos($cookie,'=');
$key = substr($cookie,0,$s);
$value = substr($cookie,$s);
$cookies[$key] = $value;
}
格式化捕獲的上傳請求:
$cookie = '';
$show = '';
$head = '';
$delim = '';
foreach ($cookies as $k => $v){
$cookie .= "$delim$k$v";
$delim = '; ';
}
您需要為卷曲添加一些選項
創建POST數據字符串
$post = 'key1=value1&key2=value2&key3=value3';
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
創建一個數組以放置請求標頭鍵值
使用您上載的Request標頭中的內容完全填寫Request數組。
例:
$request = array();
$request[] = "Host: www.example.com";
$request[] = "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
$request[] = "User-Agent: MOT-V9mm/00.62 UP.Browser/6.2.3.4.c.1.123 (GUI) MMP/2.0";
$request[] = "Accept-Language: en-US,en;q=0.5";
$request[] = "Connection: keep-alive";
$request[] = "Cache-Control: no-cache";
$request[] = "Pragma: no-cache";
添加到卷曲:
curl_setopt($ch, CURLOPT_HTTPHEADER, $request);
將follow設置為false。 如果有重定向,您可以查看正在發生的情況。 然后向重定向位置創建另一個curl請求。
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
在上傳curl請求Request之后,獲取Header:
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_ENCODING,"");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_FILETIME, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_TIMEOUT,10);
curl_setopt($ch, CURLOPT_FAILONERROR,true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $request);
$data = curl_exec($ch);
if (curl_errno($ch)){
$data .= 'Retreive Base Page Error: ' . curl_error($ch);
}
else {
$skip = intval(curl_getinfo($ch, CURLINFO_HEADER_SIZE));
$head = substr($data,0,$skip);
$data = substr($data,$skip);
$info = curl_getinfo($ch);
$info = var_export($info,true);
}
echo $head;
echo $info;
如果無法正常工作,請檢查$ info中“請求標頭”中的差異。
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