Invalid argument supplied for foreach()?

[KeredDrahcir]

I have a script that needs to compare some data in an array to data in sepcific locations in a session array. The first time I run the foreach there's no problem but the second time it fails but the data is the same. Can anyone help me?

foreach ($arr1 as $equ)
{
  if ($_SESSION['array'][$equ+6]==51)
  {
    list($equId, $equtitel)=equ_location($db,$id,$equ);
    if ($arr1_effect[$count]==1)
    {
      $effect="temp";
    }
    elseif ($arr1_effect[$count]==0)
    {
      $effect="total";
      $_SESSION['array'][$number+26]=0;
    }
    $arr1=1;
    break;
  }
  else
  {
    foreach ($arr1 as $equ)
    {
      DO STUFF
    }
  }
}
                          {

Can anyone suggest why the second foreach isn't working?

[Rabbit]

It's because your second loop uses the same variable as the first one.

[KeredDrahcir]

Does that mean I need to rename $equ?

That's wierd. It worked fine to begin with which was why I couldn't understand it.

Thanks.

[Rabbit]

I don't know what you mean by "to begin with" because that is vague. But almost never will you have an embedded loop where you change the outer loops variables.

[KeredDrahcir]

Is it $arr1 or $equ I need to change becuase I changed the later, and it still didn't work.

[Rabbit]

It's the $equ you have to change. If it still doesn't work, that means you have a logic error somewhere and you need to define what that means.

[KeredDrahcir]

Okay, thanks. I'll try it again. When I said it worked previously, I meant that I had to code mini pulsating data from a database. I'd had different sets of data that I needed to minipulate in the same way. I wrote the code to do what I wanted and told it to look at a column in each table that told from each set of the data that record was from.
When I tested it to begin with I had only one set of data and the offending line worked, it only stopped working when I added a second set of data. Maybe it's something in the data that didn't occur in the first test. Maybe I should check the functions too.

[Rabbit]

That's still very vague. It would help to see some sample data and results.

I don't understand what you mean by: "mini pulsating data" and "look at a column in each table that told from each set of the data that record was from"

[KeredDrahcir]

mini pulating data could easily be an auto correct from a mispelling of minipulating.

Thanks for your help. I've worked out where the problem is and what I've done wrong. I've also got a pretty good idea of why this problem never occured before and I think I know how to fix it. I'll let you know how I do, or if I need anymore help.

[KeredDrahcir]

I've fixed it. Thanks for all your help. I hope this helps anyone else who has the same problem.

[Rabbit]

Please post your solution in case someone runs into the same problem.