php採集網頁數據不完整問題（php採集網頁數據不完整問題怎麼解決）

本文目錄一覽：

1、php抓取網頁內容不完整
2、用PHP獲取網頁內容的時候獲取不完全求能完全獲取的方法
3、php獲取數據為什麼curl獲取不完整
4、php獲取數據為什麼curl獲取不完整？而用file_get_contents能獲取完整？

php抓取網頁內容不完整

用CURL可以抓取到的可能是你網速太慢超時了所以抓取不完整用 curl_setopt($ch, CURLOPT_TIMEOUT, 360) 試試看

用PHP獲取網頁內容的時候獲取不完全求能完全獲取的方法

curl是獲取的服務器端編譯後返回的代碼 . 是原始的.

curl 里沒法解析執行js . 所以得到的一直都是原始的代碼.

而瀏覽器在拿到服務器返回的代碼的時候, 會執行頁面加載js ,

js 會在DOM 里動態添加或修改刪除一些節點元素.

查看元素看到的就是經過js一頓處理之後的html內容不是原始的了. ..

所以單純使用curl 沒法獲取到”所見即所存”的代碼…

php獲取數據為什麼curl獲取不完整

因為，PHP CURL庫默認1024字節的長度不等待數據的返回，所以你那段代碼需增加一項配置：

curl_setopt($ch, CURLOPT_HTTPHEADER, array(‘Expect:’));

給你一個更全面的封裝方法：

function req_curl($url, $status = null, $options = array())

{

$res = ”;

$options = array_merge(array(

‘follow_local’ = true,

‘timeout’ = 30,

‘max_redirects’ = 4,

‘binary_transfer’ = false,

‘include_header’ = false,

‘no_body’ = false,

‘cookie_location’ = dirname(__FILE__) . ‘/cookie’,

‘useragent’ = ‘Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1’,

‘post’ = array() ,

‘referer’ = null,

‘ssl_verifypeer’ = 0,

‘ssl_verifyhost’ = 0,

‘headers’ = array(

‘Expect:’

) ,

‘auth_name’ = ”,

‘auth_pass’ = ”,

‘session’ = false

) , $options);

$options[‘url’] = $url;

$s = curl_init();

if (!$s) return false;

curl_setopt($s, CURLOPT_URL, $options[‘url’]);

curl_setopt($s, CURLOPT_HTTPHEADER, $options[‘headers’]);

curl_setopt($s, CURLOPT_SSL_VERIFYPEER, $options[‘ssl_verifypeer’]);

curl_setopt($s, CURLOPT_SSL_VERIFYHOST, $options[‘ssl_verifyhost’]);

curl_setopt($s, CURLOPT_TIMEOUT, $options[‘timeout’]);

curl_setopt($s, CURLOPT_MAXREDIRS, $options[‘max_redirects’]);

curl_setopt($s, CURLOPT_RETURNTRANSFER, true);

curl_setopt($s, CURLOPT_FOLLOWLOCATION, $options[‘follow_local’]);

curl_setopt($s, CURLOPT_COOKIEJAR, $options[‘cookie_location’]);

curl_setopt($s, CURLOPT_COOKIEFILE, $options[‘cookie_location’]);

if (!empty($options[‘auth_name’]) is_string($options[‘auth_name’]))

{

curl_setopt($s, CURLOPT_USERPWD, $options[‘auth_name’] . ‘:’ . $options[‘auth_pass’]);

}

if (!empty($options[‘post’]))

{

curl_setopt($s, CURLOPT_POST, true);

curl_setopt($s, CURLOPT_POSTFIELDS, $options[‘post’]);

//curl_setopt($s, CURLOPT_POSTFIELDS, array(‘username’ = ‘aeon’, ‘password’ = ‘111111’));

}

if ($options[‘include_header’])

{

curl_setopt($s, CURLOPT_HEADER, true);

}

if ($options[‘no_body’])

{

curl_setopt($s, CURLOPT_NOBODY, true);

}

if ($options[‘session’])

{

curl_setopt($s, CURLOPT_COOKIESESSION, true);

curl_setopt($s, CURLOPT_COOKIE, $options[‘session’]);

}

curl_setopt($s, CURLOPT_USERAGENT, $options[‘useragent’]);

curl_setopt($s, CURLOPT_REFERER, $options[‘referer’]);

$res = curl_exec($s);

$status = curl_getinfo($s, CURLINFO_HTTP_CODE);

curl_close($s);

return $res;

}

php獲取數據為什麼curl獲取不完整？而用file_get_contents能獲取完整？