Problem 1:
Browsers can do POST but only from FORMs, not from links.
This is less compact HTML, can't have a single (URL) expression to define the
call; much messier JAVA if you try to use java to re-assign the specs for the
call., etc.
(Still, FORMs may be invisible; and you could have an Crs
2) Use my postredirect.php script:
Crs
====================================================================
PROBLEM 1
============= The problem.
I'd like to have a working PHP method for doing POST;
partly for future toolkit,
partly to improve myteachtable4.php
Case: https://web1.psy.gla.ac.uk/teaching/timetable.php?weekID=16
Ditto for CRs signup page
Marc's code here just reads POST input vars, no others.
So I can't do href: HREFs just do GET, and so do ordinary (php) redirects.
I have a workround by using an HTML FORM to do POST, but it stops back button
working simply in end-user's browser, and involves an extra msg.
Possible problems in my code to do PHP post:
https
cookies
password
Try contexts. See pwfr2.php?
*See myfilegetcontents
============= Method 1
function post_it($datastream, $url) {
$url = preg_replace("@^http://@i", "", $url);
$host = substr($url, 0, strpos($url, "/"));
$uri = strstr($url, "/");
$reqbody = "";
foreach($datastream as $key=>$val) {
if (!empty($reqbody)) $reqbody.= "&";
$reqbody.= $key."=".urlencode($val);
}
$contentlength = strlen($reqbody);
$reqheader = "POST $uri HTTP/1.1\r\n".
"Host: $host\n".
"User-Agent: PostIt\r\n".
"Content-Type: application/x-www-form-urlencoded\r\n".
"Content-Length: $contentlength\r\n\r\n".
"$reqbody\r\n";
$socket = fsockopen($host, 80, $errno, $errstr);
if (!$socket) {
$result["errno"] = $errno;
$result["errstr"] = $errstr;
return $result;
}
fputs($socket, $reqheader);
while (!feof($socket)) {
$result[] = fgets($socket, 4096);
}
fclose($socket);
return $result;
} // end function
============= Method 2
$arr = parse_url($targeturl);
$path = $arr['path'];
$host = $arr['host'];
//echo "path: $path"; echo "host: $host"; exit;
$data = "weekID=23";
$data = urlencode($data);
header("POST $path HTTP/1.1\r\n" );
header("Host: $host\r\n" );
header("Content-type: application/x-www-form-urlencoded\r\n" );
header("Content-length: " . strlen($data) . "\r\n" );
header("Connection: close\r\n\r\n" );
header($data);
============= Method 3
============= Method 3b:
Hidden form to automatically do POST -- BUT don't need to have the form in
HTML, nor even to add it to DOMtree. Just create it, and exec it, in response
to a javascript call (from a link/btn).
function post_to_url(path, params, method) {
method = method || "post"; // Set method to post by default
var form = document.createElement("form");
form.setAttribute("method", method);
form.setAttribute("action", path);
// Could / don't need to set style to invisible (display='none')
// ?OR put in code to decode args from path in string, and use them.
// there isn't a built in for this; but is code on web.
for(var key in params) {
var hiddenField = document.createElement("input");
hiddenField.setAttribute("type", "hidden");
hiddenField.setAttribute("name", key);
hiddenField.setAttribute("value", params[key]);
form.appendChild(hiddenField);
}
document.body.appendChild(form); // Not necessary ??
form.submit();
}
============= Comment 4
//Alternative methods here:
//Get Marc's page, edit it, display it momentarily before auto-send.
//This one: display only a tiny page; but use page and FORM to achieve POST
//Jump direct using URL: but Marc ignores GET from URL-use.
//Use php Header() to do POST. Couldn't get this to work.
// See work on this in myteachtable3.php