如果當你在PHP中執行CURLOPT_FOLLOWLOCATION 然後得到php提示錯誤訊息為:
Warning: curl_setopt() [function.curl-setopt]: CURLOPT_FOLLOWLOCATION cannot be activated openen in safedepall or based …
錯誤中提到兩個關鍵safe_mode和open_basedir,如果你是虛擬主機的沒有設定APPCHE的權限是不能透過修改伺服器設定來解決問題的,一般來說,伺服器設定safe_mode都為off,然後為了一些安全對用戶有一些限制,通過設置open_basedir來限制虛擬主機用戶的PHP執行文件夾,因此當你使用CURLOPT_FOLLOWLOCATION (php curl函數,深層抓取數據)的時候,一旦有301轉向等就會出現文中提到的錯誤訊息.
在查了相關資料後,很快找到了解決方案,http://www.php.cn/php-weizijiaocheng-362563.html,這些方法都在php官方幫助裡有.
具體做法是在curl語句用不使用curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true),在php函數中自訂一個函數,
#程式碼如下：
function curl_redir_exec($ch,$debug="")
{
static $curl_loops = 0;
static $curl_max_loops = 20;
if ($curl_loops++ >= $curl_max_loops)
{
$curl_loops = 0;
return FALSE;
}
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
$debbbb = $data;
list($header, $data) = explode("＼n＼n", $data, 2);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($http_code == 301 || $http_code == 302) {
$matches = array();
preg_match('/Location:(.*?)＼n/', $header, $matches);
$url = @parse_url(trim(array_pop($matches)));
//print_r($url);
if (!$url)
{
//couldn't process the url to redirect to
$curl_loops = 0;
return $data;
}
$last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL));
/* if (!$url['scheme'])
$url['scheme'] = $last_url['scheme'];
if (!$url['host'])
$url['host'] = $last_url['host'];
if (!$url['path'])
$url['path'] = $last_url['path'];*/
$new_url = $url['scheme'] . '://' . $url['host'] . $url['path'] . ($url['query']?'?'.$url['query']:'');
curl_setopt($ch, CURLOPT_URL, $new_url);
// debug('Redirecting to', $new_url);
return curl_redir_exec($ch);
} else {
$curl_loops=0;
return $debbbb;
}
}登入後複製
函數定義好後,curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true)這條語句替換為curl_redir_exec($ch)
這樣以後,我想你的PHP檔案應該不會提示錯誤了,關於這段程式碼,在提供PHP官方連接用可以找到.
php官方的程式碼如下
/safe 模式不能curl的函数
function curl_redir_exec($ch)
{
static $curl_loops = 0;
static $curl_max_loops = 20;
if ($curl_loops++ >= $curl_max_loops)
{
$curl_loops = 0;
return FALSE;
}
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
list($header, $data) = explode("\n\n", $data, 2);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($http_code == 301 || $http_code == 302)
{
$matches = array();
preg_match('/Location:(.*?)\n/', $header, $matches);
$url = @parse_url(trim(array_pop($matches)));
if (!$url)
{
//couldn't process the url to redirect to
$curl_loops = 0;
return $data;
}
$last_url = parse_url(curl_getinfo($ch, CURLINFO_EFFECTIVE_URL));
if (!$url['scheme'])
$url['scheme'] = $last_url['scheme'];
if (!$url['host'])
$url['host'] = $last_url['host'];
if (!$url['path'])
$url['path'] = $last_url['path'];
$new_url = $url['scheme'] . '://' . $url['host'] . $url['path'] . ($url['query']?'?'.$url['query']:'');
curl_setopt($ch, CURLOPT_URL, $new_url);
debug('Redirecting to', $new_url);
return curl_redir_exec($ch);
} else {
$curl_loops=0;
return $data;
}
}
//end登入後複製
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