php - loop through $_POST variables with similar names

Question

I have several $_POST variables, they are

$_POST['item_number1']
$_POST['item_number2']

and so on

I need to write a loop tha displays the values of all the variables (I don't know how many there are). What would be a simplest way to go about it? Also what would be the simplest way if I do know how many variables I have?

Answer 1

This will echo all POST parameters whose names start with item_number:

foreach($_POST as $k => $v) {
    if(strpos($k, 'item_number') === 0) {
        echo "$k = $v";
    }
}

PHP Manual: foreach(), strpos()