php获取当前http或者https协议代码分享

php获取当前http或者https协议代码分享

if(isset($_SERVER['HTTP_X_CLIENT_SCHEME'])){
  $scheme = $_SERVER['HTTP_X_CLIENT_SCHEME'] . '://';
}elseif(isset($_SERVER['REQUEST_SCHEME'])){
  $scheme = $_SERVER['REQUEST_SCHEME'] . '://';
}else{
  $scheme = 'http://';
}
echo $scheme;
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