foreach

[_matrix_]

Hi,

When using:

foreach($_POST['total'] as $total) { 

how can you grab only records where $_POST['total'] contain data?

Thanks

[cheesedude]

You could try:

if (!empty($_POST['total'])
{
    foreach($_POST['total'] as $total)
    ...
}

//  Or:  

if (is_array($_POST['total'])
{
    // do foreach loop
}

foreach will error if you attempt to use it on a non-array. If it isn't an array, obviously, you shouldn't use foreach.

[Walkere]

Hi,

When using:

foreach($_POST['total'] as $total) { 

how can you grab only records where $_POST['total'] contain data?

Are you looking to only get the elements of $_POST['total'] that have data in them? Or only loop through $_POST['total'] if it has data in it?

If you only want to use elements in $_POST['total'] that have values, you've got a couple options. You can't selectively choose which elements to iterate with a foreach, so you'll need to either add some logic to the loop or filter the array beforehand.

The simplest thing would be to include an if statement in the loop.

foreach ($_POST['total'] as $total) {
  if ($total) {
    //  $total has a value, continue processing it
  }
} 

Or, you could use the array_filter function. It allows you to pass all of the array values through a callback function and then throws them away if they fail the test. Your callback function could simply check to make sure that the element has a filled value.

function notEmpty($var) {
  return !(empty($var));
}

$filteredTotals = array_filter($_POST['total'], "notEmpty");
foreach ($filteredTotals as $total) {
  //  Process $totals here
} 

Good luck,
- Walkere

[Jake Arkinstall]

Array_filter automatically filters out empty values if you don't put a second argument, so the above code could be simplified to:

foreach(array_filter($_POST['total']) as $total){
   //  Process $totals here
} 

[Walkere]

Array_filter automatically filters out empty values if you don't put a second argument, so the above code could be simplified to:

foreach(array_filter($_POST['total']) as $total){
   //  Process $totals here
} 

Ahh, good tip. Never actually used array_filter (except to test that snippet). Guess I should have read the doc page a little closer...

- Walkere

[_matrix_]

Hi,

Thanks for all the input!

arkinstall solution works great.

Thanks