Can i do this if not how

[Brandon_R]

Hello guys i am having a bit of trouble looping through arrays. Notice i said arrays

 

I was just wondering if i can do this

 

$array1 = explode($_POST['array1']);
$array2 = explode($_POST['array2']);

foreach ($array1 AS $array1exploded AND $array2 AS $array2exploded)
{

code here to play with the arrays 

}

 

If not could you guys guide me on how to do it.

[Alex]

Nested foreach loops:

 

foreach($arr1 as $part1)
{
    foreach($arr2 as $part2)
    {
        //Stuff
    }
}

[.josh]

hmm not sure if OP wants nested, but rather same level looping.  If the array keys are the same, you can do this:

 

foreach($array1 as $key => $val) {
  echo $val; // echo current $array1 value
  echo $array2[$key]; // echo current $array2 value
}

 

if one is a numeric array ($array1) and one is an associative array ($array2), you can do this:

 

$key = 0;
foreach ($array2 as $val) {
  echo $val; // echo current $array2 (associative) value
  echo $array1[$key]; // echo current $array1 (numeric) value
  $key++;
}

 

If they are both associative but have different keys, you can do this:

 

foreach ($array1 as $val) {
  echo $val; // echo current $array1 value
  echo current($array2); // echo current $array2 value
  next($array2);
}

 

of course, all of these examples assume that both of the arrays have the same number of elements...

[Brandon_R]

@Alex

 

Seems like im going to try your method. I am going to do some error checking for each foreach. I would like to know which number the foreach loop is on so i can output Input for example Number 7 was incorrectly formatted. Is there any native way to do that or do i have to add counter++ in the foreach to determine the number it is at.

[Alex]

Are you only checking one variable? Because that's what it sounds like from that description. Because you want to know the index of the element if you should use a for():

 

for($i = 0;$i < count($arr);$i++)
{
    echo $arr[$i];
}

[Brandon_R]

I am checking for all the variables to make sure they exist before saving.

[Alex]

Do you mean you're checking all the elements of more than one array? Can you explain a bit better please.