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 di

Answer 1

foreach($_POST as $k => $v) {
    if(preg_match("#item_number([0-9]+)#si", $k, $keyMatch)) {
        $number = $keyMatch[1];

        // ...
    }
}