Looping through postvars

[mrbaseball34]

I get this data returned from my post:

gameno1=661
&homescore1=2
&visitorscore1=13

&gameno2=634
&homescore2=15
&visitorscore2=2

&gameno3=621
&homescore3=0
&visitorscore3=21

&gameno4=596
&homescore4=9
&visitorscore4=4

&gameno5=568
&homescore5=3
&visitorscore5=1

How would I write a loop to iterate through these values,
check to see if any of the scores are empty and call a mySQL update query?

I can do the query part, it's just the loop I'm wondering about.

[TheDefender]

I would be careful with this method, because it's always better to call each variable directly, so as not to get some sort of malicious code injection, but...

foreach($_POST as $k => $v){
// do the manipulation on the value ($v) where the key is referenced as ($k)
    if($v == ""){
        // Do your query if the value is empty
    }
}

That's the basics of how to loop through the $_POST array. It's really no different than any other array when you are trying to loop through it.

[mrbaseball34]

I must be blind because I can't get just the values for the gameno like this:

$i = 0;
foreach($_POST as $k => $v)
{
    $gameno = $v[$i];
    echo "gameno".$gameno;
    echo "<br>";
    $i+=3; 
}

I'm used to working with arrays where you use indexes, Delphi,
so this is kind of strange to me.

[TheDefender]

Sorry, it just dawned on me you are probably using a GET method and not a POST...

$countpost = count($_GET)/3;
for($i = 1; $i < $countpost+1; $i++){
    echo "gameno".$i."<br />";
}

What EXACTLY are you trying to do here with this info?

[mrbaseball34]

Actually, I want to loop through the postvars and
build and run this query for each gamenum:

  "update games set "
  "  homescore =".$homescore. ", ".
  "  visitorscore =".$visitorscore.
  " where gamenum =". $gamenum

assigning (where X = 1, 2, 3, 4, 5)
$homescore = $homescoreX
$visitorscore = $visitorscoreX
$gamenum = $gamenumX

[Weedpacket]

Ah, so the fields you want to look at are

for($i=1; $i<=5; $i++)
{
  $gamenum = $_POST['gamenum'.$i];
  $homescore = $_POST['homescore'.$i];
  $visitorscore = $_POST['visitorcore'.$i];
...do stuff with $game, $homescore, and $visitorscore...
}

That does not check that the posted variables are actually present.

  $gamenum = isset($_POST['gamenum'.$i]) ? (int)$_POST['gamenum'.$i] : 0;

(where the (int) is to force the value to be an integer) would be better; that's assuming that replacing missing fields with zero is appropriate.