如何在php中获取完整的规范请求

Question

I am just wondering how to get the full canonical request to a php file, I just want to echo it back as text or html.

for example: a get request to file.php outputs the following

output:

GET http://path/to/this/file.php HTTP/1.1
User-Agent: example
... other parameters

edit: I would like the complete string in tact

Answer 1

It's not possible to get the original request string, as far as I know. However, all the information that comes from the request header is put into the $_SERVER associative array. Every header field Xxx-Yyy corresponds to $_SERVER['HTTP_XXX_YYY'] -- the letters in the header name are converted to uppercase, and hyphens are replaced with underscores. So you can do:

echo $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . ' ' . $_SERVER['SERVER_PROTOCOL'] "
";
foreach ($_SERVER AS $key => $value) {
    if (substr($key, 0, 5) == 'HTTP_') {
        echo str_replace('_', '-', substr($key, 5)) . ': ' . $value . "
";
    }
}