Looping Variables (Item1, Item2, etc)

ShawnJC

Hello all PHP'rs. I'm an actionscript programmer who has expanded to PHP. I tried searching for this but really don't know what to search for. What I've got is some variables coming into PHP from flash that will be in the form:

$item1
$item2
$item3

And so on. They won't always be the same amount of $item named variables. Now to check if they exist in Actionscript I would do this:

LOOP......

if (eval ("item"+itemNumber)) {
....do something
}

END LOOP....

LOOP....

if (eval ("item"+itemNumber == "hello")) {
....do something
}

END LOOP...

So, what would be the way to do something like that in PHP?

Megahertza

I really don't any actionscript but I wil try to solve this

to do a loop you need something like this, lets just say $item1 is = 1

<?php
while ($item1 <= 10) {
echo "$item1";
$item1++;
}
?>

This outputs

12345678910

If you give me more Info on what the variables are and what you want to with them I can or some 1 else can make a better loop for you

ShawnJC

Sorry, was kind of hard for me to explain without using previously known coding examples. I understand how to do a loop in PHP, but I want to loop through variables that are named variable1, variable2, variable3 etc. These are not arrays so I need a way to concate a string like

"variable" . 2;

but be able to read that value as the value of variable2. In actionscript the way to convert a string into translating it as an object or variable is with eval ("variable"+2), but I'm not sure the way to do this in PHP.

tsinka

Hi,

are these variable names a sequence, like

variable1,variable2,variable,3.... or is something like this possible ?

variable1,variable5,variable6,variable10....

Example if the variable names are a sequence:

//GET variables:
$i=1;
while (isset($_GET['variable'.$i])) {
  $value = $_GET['variable'.$i];
  // do something with $value
  $i++;
}

//POST variables:
$i=1;
while (isset($_POST['variable'.$i])) {
  $value = $_POST['variable'.$i];
  // do something with $value
  $i++;
}

I am not a Flash professional so one question:

Is it possible to give that variables names like e.g. variable[1],variable[2].... and so on ? If yes then PHP will interpret that variables as array so you can do something like this (e.g. POST variables):

  foreach($_POST['variable'] as $key => $value) {
    // do something with $value and/or $key
  }

Thomas

ShawnJC

Thanks for the info. They are in order (just the max end number is variable) so that should work.
You can name variables in an array in Flash and they will be named variable[1], variable[2] etc but I'd have to experiment to see how this posts. See to POST variables in flash you have to first create an object and then create variables in it. Say your object is a movie clip with the name george. Then you go
george.variable1 = "hi";
george.variable2 = "bye";
And when you do the code to post you specify you are posting from george so the output is all variables created in george. In this case just variable1=hi&variable2=bye. If I created an array with george, I'm not sure what that would post, but I'll sure try. Good info to know. Thanks again.

-Shawn

tsinka

Hint: To check how the posted data looks like add something like this to your code:

echo "<pre>\n";
print_r($_POST);
// the same for $_GET
echo "</pre>\n";

That will print the post and/or get values in a human readable way.

Thomas

rmconlon

I am trying to do something similar, but with values I have selected from a database. I don't think I need to use the $POST or $GET (I could be wrong)

Here is the code:

$track1_1=mysql_result(QUERY);
$track1_2=mysql_result(QUERY);
$track1_3=mysql_result(QUERY):
etc....

This is storing a value in each variable that I need to print on the screen. I want to use a loop to create the HTML. For example

while ($i<100)
{
echo "$i";
echo "track1_1 "
i++;
}
The result being

VALUE1
VALUE2
etc...

Can I somehow use the counter "i" to create the variable I want to echo???
Something along the lines of

while ($i<100)
{
echo "$i";
echo "track1_.$i "
i++;
}

tsinka

Hi,

I think there might be an easier solution using e.g. a PHP array. Please post the full code.

Alternatively, do something like

echo ${"track1_".$i}." ";

Thomas

rmconlon

thomas...

Thanks!! worked like a charm.

In case you still want it... here is the code.

mysql_connect(localhost,$username,$password);
@mysql_select_db($database) or die("Unable to select database");

//Get appropriate tracklisting
$rresult = mysql_query("SELECT * FROM xxxx WHERE showdate= '$DateResult'");

//Count Rows (should always be 1)
$num=mysql_numrows($result);
$i=0;
while($i<$num)
{
$showdate=mysql_result($result,$i,"showdate");
$track1_1=mysql_result($result,$i,"track1_1");
$track1_2=mysql_result($result,$i,"track1_2");
$track1_3=mysql_result($result,$i,"track1_3");
$track1_4=mysql_result($result,$i,"track1_4");
$track1_5=mysql_result($result,$i,"track1_5");
$track1_6=mysql_result($result,$i,"track1_6");
$track1_7=mysql_result($result,$i,"track1_7");
$track1_8=mysql_result($result,$i,"track1_8");
$track1_9=mysql_result($result,$i,"track1_9");
$track1_10=mysql_result($result,$i,"track1_10";
$track1_11=mysql_result($result,$i,"track1_11");
$track1_12=mysql_result($result,$i,"track1_12");
$track2_1=mysql_result($result,$i,"track2_1");
$track2_2=mysql_result($result,$i,"track2_2");
$track2_3=mysql_result($result,$i,"track2_3");
$track2_4=mysql_result($result,$i,"track2_4");
$track2_5=mysql_result($result,$i,"track2_5");
$track2_6=mysql_result($result,$i,"track2_6");
$track2_7=mysql_result($result,$i,"track2_7");
$track2_8=mysql_result($result,$i,"track2_8");
$track2_9=mysql_result($result,$i,"track2_9");
$track2_10=mysql_result($result,$i,"track2_10");
$track2_11=mysql_result($result,$i,"track2_11");
$track2_12=mysql_result($result,$i,"track2_12");
++$i;
}
//Close the Database
mysql_close();

?>
<? //BEGIN LOOP FOR HOUR 1 ?>

<td valign="top">
<? $hour1count=1;
while ($hour1count<13) {
echo "$hour1count . ";
$currentvalue = '$track1'.$hour1count;
echo ${"track1".$hour1count};
echo " ";
$hour1count++;
}

?>