Why won't this combination of MySQL and PHP work?

Question

Can anyone tell me if the following MySQL procedure along with a PHP script work?

I've set up mysql procedure here and I think it makes sense but the PHP script will print error. By that I'm guessing that there were 0 rows effected?

MySQL:

DELIMITER $$
CREATE procedure spPlayer (IN pName NVARCHAR(50), IN pMobileNumber NVARCHAR(50), IN pTime datetime, OUT pID INT)
begin

select count(*) into @cnt FROM tblnewusers;
IF @cnt < 12 THEN
    insert into tblplayers (Name, MobileNumber, Time)
    values
    (pName, pMobileNumber, pTime);
    SELECT pID = @@IDENTITY;
END IF;
END$$
DELIMITER ;

PHP:

<?php
$dt = new datetime();
$name = "Test";
$mobile = "1234567";
$time = $dt->format('Y-m-d H:i:s');

$dbhost = 'dbHost here';
$dbuser = 'dbUser here';
$dbpass = 'dbPass here';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn)
{
    die('Could not connect: '. mysql_error());
}   

mysql_select_db("SafeDropbox", $conn);

$result = mysql_query("CALL spPlayer();");

if($result) {
    echo "Success";
}
else {
    echo "Error";   
}

?>

EDIT Here's the MySql table set up it it helps!

Answer 1

This is an assumption answer, and this could definetly be more detailed and refined:

When you echo mysql_error(); it produces the following error for you:

ErrorIncorrect number of arguments for PROCEDURE safedropbox.spPlayer; expected 4, got 0

When you created your procedure you set it with 4 arguments:

CREATE procedure spPlayer (IN pName NVARCHAR(50), IN pMobileNumber NVARCHAR(50), IN pTime datetime, OUT pID INT)

Hence, when you call it you might need to provide spPlayer with with 4 arguments as well:

$result = mysql_query("CALL spPlayer();");