$wanted_re = str_replace('%i', '[+-]?\d+', $wanted_re);
$wanted_re = str_replace('%d', '\d+', $wanted_re);
$wanted_re = str_replace('%x', '[0-9a-fA-F]+', $wanted_re);
- $wanted_re = str_replace('%f', '[+-]?\.?\d+\.?\d*(?:E[+-]?\d+)?', $wanted_re);
+ $wanted_re = str_replace('%f', '[+-]?\.?\d+\.?\d*(?:E|e[+-]?\d+)?', $wanted_re);
$wanted_re = str_replace('%c', '.', $wanted_re);
// %f allows two points "-.0.0" but that is the best *simple* expression
}