public static function getCanonicalHeaders($headers)
{
//如果没有headers，则返回空串
if (count($headers) == 0) {
return '';
}
$headerStrings = array();
foreach ($headers as $k => $v) {
//跳过key为null的
if ($k === null) {
continue;
}
//如果value为null，则赋值为空串
if ($v === null) {
$v = '';
}
//trim后再encode，之后使用':'号连接起来
$headerStrings[] = HttpUtil::urlEncode(strtolower(trim($k))) . ':' . HttpUtil::urlEncode(trim($v));
}
//字典序排序
sort($headerStrings);
//用'\n'把它们连接起来
return implode("\n", $headerStrings);
}
public static function getCanonicalHeaders($headers)
{
if (count($headers) == 0) {
return '';
}
$headerStrings = array();
foreach ($headers as $k => $v) {
if ($k === null) {
continue;
}
if ($v === null) {
$v = '';
}
$headerStrings[] = HttpUtil::urlEncode(strtolower(trim($k))) . ':' . HttpUtil::urlEncode(trim($v));
}
//Sort in alphabet order
sort($headerStrings);
//Catenate with '\n'
return implode("\n", $headerStrings);
}
