Apache 301 status when using put method - php

Question

Develop a simple backbone and php application but on a server i get 403 error
whenever i use a put method
Of course when using more traditional method such as get and post i do not get any problem.
Could any one advise on what is the specific settings to tune because on another server it work great.
My suspects are
apache configuration
php configuration
Thanks in advance.
Code Sample
PHP file
$this -> method = $GLOBALS['_SERVER']['REQUEST_METHOD'] ;
switch ( $this -> method ) {
case ( 'POST' ) :
foreach ( $_POST as $k => $v )
$data -> $k = $v ;
$data = $this -> save ($data) ;
$this -> output( $data ) ;
break
case ( 'PUT' ) :
$putdata = fopen("php://input", "r");
while ($d = fread($putdata, 1024))
$data .= $d ;
$data = json_decode( $data ) ;
$data = $this -> save ($data) ;
$this -> output( $data ) ;
break ;
case ( 'DELETE' ) :
$data = $this -> delete($data) ;
$this -> output( $data ) ;
break ;
case ('GET') :
default:
$data = $this -> retrieve () ;
$this -> output( $data ) ;
break ;
}
Note that backbone does not need form using jquery ajax to make an xhr request
arguments: {
0: {
contentType: "application/json"
data: {
"id":0,
"dat":"10-03-2014",
"title":"Bunk bed",
"current":false,
"enrole":[],
"result":"",
"starts":{"m":{},"f":{}},"sex":"m"}
}
dataType: "json"
emulateHTTP: false
emulateJSON: false
error: function (resp) { ... }
parse: true
processData: false
success: function (resp) { ... }
type: "PUT"
url: "event" // event is a folder with index.php
validate: true
}
}
Backbone.$.ajax.apply(Backbone.$, arguments);
Here is the request made by the browser
Request Method:PUT
Status Code:301 Moved Permanently
Request Headersview parsed
PUT /maa/event HTTP/1.1
Host: localhost
Connection: keep-alive
Content-Length: 123
Cache-Control: no-cache
Pragma: no-cache
Origin: http://localhost
X-Requested-With: XMLHttpRequest
Content-Type: application/json
Accept: application/json, text/javascript, */*; q=0.01
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36
Referer: http://localhost/maa/
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8,fr;q=0.6,fr-FR;q=0.4
Request Payloadview parsed
{"id":0,"dat":"10-03-2014","title":"Acton Vale","current":false,"enrole":[],"result":"","starts":{"m":{},"f":{}},"sex":"m"}
Everything work except for the put which generates a 301 error