PHP Iterate through $_POST and use values by name

Question

I have a form that contains a number of fields with names item1, item2, item13, item43 etc, each time those fields are different because they are populated in the form with AJAX

Answer 1

foreach($_POST as $key => $value)
{
    if (strstr($key, 'item'))
    {
        $x = str_replace('item','',$key);
        inserttag($value, $x);
    }
}