Im trying to pass arrays via the url. I've tried the following:

 $sdatawk = serialize(urlencode($datawk));  

 $sdatay = serialize(urlencode($datay));  

 $sdata = serialize(urlencode($data));

url looks like this:

graphcode.php?datawk=$sdatawk&datay=$sdatay&data=$sdata

on the receiving page:

$tdatawk= unserialize(urldecode($_GET['datawk'])); 
$tdata = unserialize(urldecode($_GET['datay'])); 
$tsdata = unserialize(urldecode($_GET['sdata']));

When I do a var_dump of any of the above, I get:

NULL

Please help me figure out what I'm doing wrong. Thanks in advance

    "urlencode()" takes a string argument, but you're passing it an array. Try switching "serialize()" and "urlencode()" around.

      I did try switching it around...

      It not returns: string(0) ""

      On the receiving page, the url looks like this after it is passed:

      datawk=a%3A13%3A%7Bi%3A0%3Bs%3A1.........

        Check the manual page for "urlencode()".

        At any rate, you can't pass an array to a function that requires a string.

          Check the manual page for "urlencode()" and problems to watch for with it.

          At any rate, you can't pass an array to a function that requires a string.

            Hmmm. Ok, I'll check it out. Thanks.

            So how is it that I would pass an array then. I need to be able to use it as an array on the output page in a graph I'm making.

              Ok this is what I have so far. I'm using it with jpgraph:

              This is my receiving page from the form. Only included the first if statement here

              $players = $_POST['subcat3'];
$position = $_POST['cat'];
$year = $_POST['subcat'];
$fpydpt = $_POST['pass_yd'];
$fpydper = $_POST['pass_ydper'];
$fruydper = $_POST['rush_ydper'];
$freydper = $_POST['rec_ydper'];
$fptd = $_POST['pass_td'];
$fruyd = $_POST['rush_yd'];
$freyd = $_POST['rec_yd'];
$fttd = $_POST['total_td'];
$fin = $_POST['qbin'];
$freatt = $_POST['rec_att'];

$fpydcalc = ($fpydpt / $fpydper);
$fruydcalc = ($fruyd / $fruydper);
$freydcalc = ($freyd / $freydper);


if (($_POST['pass_yd'] > 5) || ($_POST['pass_ydper'] > 50) || ($_POST['rush_yd'] > 3) || ($_POST['rush_ydper'] > 50) || ($_POST['rec_yd'] > 3) || ($_POST['rec_ydper'] > 50) || ($_POST['qbin'] < -5) || ($_POST['qbin'] > 0) || ($_POST['rec_att'] > 3) || ($_POST['pass_td'] > 10) || ($_POST['total_td'] > 10))
	{
	  echo "<B>Give me a break. Pick some real settings. <a href=\"graphmenu.php\">Try again</a></b><br><br>";
}
elseif (isset($_POST['subcat3']) && (isset($_POST['subcat'])) && (isset($_POST['ret'])))
{
 if ($_POST['cat']== 1)
	{

$SQL = "SELECT * from playerstats ps, players p WHERE ps.player_id='".$_POST['subcat3']."'". " and p.player_id=ps.player_id and ps.year='".$_POST['subcat']."'". " ORDER BY ps.week ASC"; 
   $RESULT = mysql_query($SQL);
 if ($myrow=mysql_fetch_array($RESULT)) {
      do { 
	 $year = $myrow["year"];
	 $ptd[] = $myrow["pass_td"];
	 $ryd[] = $myrow["rush_yd"];
     $datawk[] = $myrow["week"]; 
     $qbi[] = $myrow["qb_in"];
     $data[] = $myrow["pass_yd"]; 
	 $att[] = $myrow["pass_att"];
	 $cmp[] = $myrow["pass_cmp"];
     $data2[] = (($myrow['pass_yd'] * $fpydcalc) + ($myrow['pass_td'] * $fptd) + ($myrow['qb_in'] * $fin)  + ($myrow['rush_yd'] * $fruydcalc) + ($myrow['total_td'] * $fttd));
	 $lastname = $myrow["lname"];
	 $firstname = $myrow["fname"];	
     $data_names[] = $myrow["lname"]."(".$players.")";
}
while ($myrow=mysql_fetch_array($RESULT)); 
   }

  for ($n = 0; $n < max($datawk); $n++) {
    if ($datawk[$n] != $n + 1) {
        array_splice($datawk, $n, 0, (array) '-');
        array_splice($data, $n, 0, (array) '0');
        array_splice($ptd, $n, 0, (array) '0');
        array_splice($data2, $n, 0, (array) '0');
         } 
   }
 $sdatawk = urlencode(serialize($datawk));  
              
 $sdata2 = urlencode(serialize($data2));  
              
 $sdata = urlencode(serialize($data));
 $scmp = urlencode(serialize($cmp));
 $satt = urlencode(serialize($att));
 $sqbi = urlencode(serialize($qbi));
 $sryd = urlencode(serialize($ryd));
 $sptd = urlencode(serialize($ptd));

   echo "<img src=\"graphcode.php?pid=$players&pos=$position&year=$year&pypt=$fpydpt&pydp=$fpydper&datay=$sdata&datawk=$sdatawk&data2=$sdata2&ptd=$sptd&qbi=$sqbi&ryd=$sryd&cmp=$scmp&att=$satt&lname=$lastname&fname=$firstname&rydp=$fruydper&fruydp=$fruyd\">";

   }

              Im trying to pass the arrays to the graphcode page, which does the actual graph rendering.

              That page looks like this:

              I've removed the actual graph code for sake of space, but it does work:

              $players = $_GET['pid'];
$position = $_GET['pos'];
$year = $_GET['year'];
$tdatawk= urldecode(unserialize($_GET['datawk'])); 
$tdata = urldecode(unserialize($_GET['datay'])); 
$tdatay2 = urldecode(unserialize($_GET['datay2'])); 
$tdata2 = urldecode(unserialize($_GET['data2'])); 
$tqbi = urldecode(unserialize($_GET['qbi'])); 
$tptd = urldecode(unserialize($_GET['ptd'])); 
$tatt = urldecode(unserialize($_GET['att'])); 
$tcmp = urldecode(unserialize($_GET['cmp'])); 
$tryd = urldecode(unserialize($_GET['ryd'])); 
$fpydpt = $_GET['pypt'];
$fpydper = $_GET['pydp'];
$fruydper = $_GET['rydp'];

var_dump ($tdatawk);

                I couldn't manage to pass arrays via the URL on my own test server, but then again I wouldn't want to. The GET string is limited to something like 255 characters. At any rate, I would never try to pass arrays or something of that nature through the URL.

                Look into using sessions or cookies. (That's my opinion, anyway.)

                  OK I started messing with sessions, but Im a little stuck

                  My query:

                  $SQL = "SELECT * from playerstats ps, players p WHERE ps.player_id='".$_POST['subcat3']."'". " and p.player_id=ps.player_id and ps.year='".$_POST['subcat']."'". " ORDER BY ps.week ASC";
   $RESULT = mysql_query($SQL);
if ($myrow=mysql_fetch_array($RESULT)) {
      do {
     $year = $myrow["year"];
     $ptd[] = $myrow["pass_td"];
     $ryd[] = $myrow["rush_yd"];
     $datawk[] = $myrow["week"];
     $qbi[] = $myrow["qb_in"];
     $data[] = $myrow["pass_yd"];
     $att[] = $myrow["pass_att"];
     $cmp[] = $myrow["pass_cmp"];
     $data2[] = (($myrow['pass_yd'] * $fpydcalc) + ($myrow['pass_td'] * $fptd) + ($myrow['qb_in'] * $fin)  + ($myrow['rush_yd'] * $fruydcalc) + ($myrow['total_td'] * $fttd));
     $lastname = $myrow["lname"];
     $firstname = $myrow["fname"];    
                  
     $data_names[] = $myrow["lname"]."(".$players.")";
}
while ($myrow=mysql_fetch_array($RESULT));
   }

  for ($n = 0; $n < max($datawk); $n++) {
    if ($datawk[$n] != $n + 1) {
        array_splice($datawk, $n, 0, (array) '-');
        array_splice($data, $n, 0, (array) '0');
        array_splice($ptd, $n, 0, (array) '0');
        array_splice($data2, $n, 0, (array) '0');
         }
   }

                  How would I send the below via a session:

                       $ptd[] = $myrow["pass_td"];
     $ryd[] = $myrow["rush_yd"];
     $datawk[] = $myrow["week"];
     $qbi[] = $myrow["qb_in"];
     $data[] = $myrow["pass_yd"];

                  I've tried several things, but they show as NULL on the receiving page. Any tips to get me started would be appreciated

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