[SOLVED] Problem calling $_POST[$i]...

[kristofferlc]

Hi everyone, i've been working on a script where i have to call some defreind $_POST variables, names after ID´s in a database, verry much like in this topic:

http://www.phpfreaks.com/forums/index.php/topic,261404.0.html

 

I belive i'm calling the functions properly, and i know my query works, so i dont realy know why my server cant call the $_POST variables...

 

My code looks somewhat like this:

while ($row_categories = mysql_fetch_assoc($categories)) {
  $tmp = $row_categories['id'];
  if(isset($_POST["$tmp"])) {
    echo $_POST["$tmp"];
  }
}

 

This isnt the only thing that wont work, i've tried with a normal while loop where i use $i = 0; and $i++;...

So, my big problem is that the server returns "false" on the isset($_POST["$tmp"]); function...

Does anyone have an idea why?...

[Philip]

Well, you technically don't need the quotes around it if its just a variable. That won't cause the problem... just a side thing.

 

Are you sure the database values are the same as the form names - Echo them to see!

 

 

Try running the following, it will give you all your data names and will show you why they aren't matching up:

while ($row_categories = mysql_fetch_assoc($categories)) {
$tmp = $row_categories['id'];
if(isset($_POST[$tmp])) {
	echo $_POST[$tmp],'<br>';
} else {
	echo 'Failed on: ',$tmp,'<br>';
}
}
echo '<pre>'; print_r($_POST); echo '</pre>';

[kristofferlc]

Yes, the database values are the same as called, and while i tried echoing them with your script it didnt reyurn anything...

 

It doesnt even return anything with this more simple loop:

(Checkbox's with the name 1,2,3,4 and 5 are being used to check this, same value as name, if that matters....)

$i = 0;
while($i<=5) {
  $i++;
  if(isset($_POST[$i])) {
    echo $i;
  }
}

 

I get NOTHING in return from any of them... :S

[Philip]

while i tried echoing them with your script it didnt reyurn anything...

 

You got nothing at all? You should have at least gotten Array ( )

[kristofferlc]

Okay, i've got something now...

I tried with the simple loop, and ran your code trough it:

if($_POST) {
  $i=1;
  while($i<=5) {
    if(isset($_POST[$i])) {
      echo $_POST[$i];
    }
    else { echo "Failed on $i<br />"; }
     $i++;
  }
  echo '<pre>'; print_r($_POST); echo '</pre>';
}

 

And i got this out of it (marking box 2 and 3):

Failed on 1

2

3

Failed on 4

Failed on 5

 

Array

(

    [2] => 2

    [3] => 3

    [button] => Submit

)

 

 

I'll work a bit on the database called array, hang on. (And thanks so far)

[Philip]

Okay, good start

[kristofferlc]

Okay, getting something now, but still not a solution.

Now i call the loop like this:

do { 
$tmp = $row_butikker['ID'];
if(isset($_POST[$tmp])) {
	echo $_POST[$tmp].'<br>';
} else {
	echo 'Failed on: '.$tmp.'<br>';
}
echo $row_butikker['ID'].'<br><br>';
} while ($row_butikker = mysql_fetch_assoc($butikker));
echo '<pre>'; print_r($_POST); echo '</pre>';

 

And gets this in return:

Failed on:

 

 

 

Array

(

    [8] => 8

    [6] => 6

)

 

So i'm guessing something's wrong with my call of the loop, since it fails to show the $tmp value anyhow...

I call the database the same way in the form script and the loop script...

(And database data is static as it is now, i'm only running in test stages.)

[Philip]

Make sure this is at the top:

error_reporting(E_ALL);
ini_set('display_errors', TRUE);

 

I have a sneaky suspicion it has to do with the column name in your database. First, you used 'id' now 'ID' - what is it in the db?

[kristofferlc]

I know i made that error, ID is the right one to use, but i still get nothing while trying to make the loop...

The code you just gave didnt return anything... But i think i'm calling the query in a wrong way, i cant make it repeat the ID value...

 

Hold on please. A litle more testing, i think i'm on a clue now...

And again thanks for giving your self time to help me with this.

[kristofferlc]

FINALY!! I made it work.

 

In my query i was using a session identify what ID's to get, and i had not included the session_start() function. :S

Sorry for making this stupid error, and thanks alot for all the help i got from you KingPhilip.