You have to look at the headers
Exactly...submit the form and the HEADER version of the string returns "a:0:{}"
But, a print() of the same string variable correctly returns "a:1:{s:3:"foo";s:3:"bar";}"
Dig deeper into it :)
Okay. Running 4.3.6 and 5.0.0, I see the following requests and responses. I even added a "X-CacheDebug-six" header that gets the actual value of the serialized $_POST...
*** FIRST REQUEST TO test.php *** ---------------------------------------------------------- http://grape/test.php
GET /test.php HTTP/1.1
Host: grape
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
HTTP/1.x 200 OK
Date: Tue, 24 Aug 2004 18:36:43 GMT
Server: Apache/1.3.31 (Win32) PHP/5.0.0
X-Powered-By: PHP/5.0.0
X-CacheDebug-five: 7
X-CacheDebug-six: a:0:{}
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html
----------------------------------------------------------
So you can see how the correct length and value are sent in the headers. Printing $s2 (within the function) shows a:0:{}
----------------------------------------------------------
*** SECOND REQUEST (POST) TO test.php ****
----------------------------------------------------------
http://grape/test.php
POST /test.php HTTP/1.1
Host: grape
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040803 Firefox/0.9.3
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: http://grape/test.php
Content-Type: application/x-www-form-urlencoded
Content-Length: 7
foo=bar
HTTP/1.x 200 OK
Date: Tue, 24 Aug 2004 18:36:57 GMT
Server: Apache/1.3.31 (Win32) PHP/5.0.0
X-Powered-By: PHP/5.0.0
X-CacheDebug-five: 27
X-CacheDebug-six: a:1:{s:3:"foo";s:3:"bar";}
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html
----------------------------------------------------------
Again, here you can see how the length and value are correct.
If you're not seeing the same thing with 4.3.3, then upgrade.
--
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