Is it actually possible to get data in both $_GET and $_POST? And how does this relate to what is in $_REQUEST?
+15
A:
Yes, it's possible. Consider a form like this:
<form action="foobar.php?a=123&b=456" method="post">
<input type="text" name="a" value="llama">
<input type="text" name="b" value="duck">
<input type="submit" name="go" value="Submit me!">
</form>
On submitting this form, $_GET["a"] == "123", $_GET["b"] == "456", $_POST["a"] == "llama", $_POST["b"] == "duck", and $_POST["go"] == "Submit me!".
How this relates to the $_REQUEST superglobal depends on the value of the request_order (or the older variables_order) PHP configuration setting, as the php.ini documentation explains.
bcat
2009-11-15 06:33:57
so, this gives me the ability to see 123 llamas and 456 ducks without getting up from my desk! cool.
Don
2009-11-15 07:03:12
Happy to help when it comes to llamas and ducks. :)
bcat
2009-11-15 07:09:06
+1
A:
It's possible. The request_order or (if that's unset) variables_order directive determines which will take precedence in $_REQUEST when a key is set in both.
outis
2009-11-15 06:34:21
+1
A:
There can definitely be data in both... Consider the following (very simple) page:
<body>
<form method="post" action="params.php?myparam=myval">
<input type="text" name="param1"></input>
<input type="submit" name="submit" value="submit" />
</form>
</body>
Notice that the action of the form contains a query string, and the method is post. $_GET contains the query string params, $_POST contains the form params, and $_REQUEST contains the merged parameters from both arrays:
array(3) {
["myparam"]=>
string(1) "myval"
["param1"]=>
string(0) ""
["submit"]=>
string(6) "submit"
}
Check out request_order for controlling how the super-globals are processed in $_REQUEST.
jheddings
2009-11-15 06:37:53
A:
It's possible in PHP because, despite their names, $_GET and $_POST don't really need a GET or POST.
- $_GET contains the querystring parsed as form encoded variables.
- $_POST contains the request body parsed as form-encoded variables
It doesn't matter what the actual request method is - it could be a PUT and those superglobals would still get populated.
Ciaran McNulty
2009-11-15 09:28:31