Same as #22423, NumberFormatter::parse() and NumberFormatter::parseCurrency() accepted the by-reference offset as a zend_long, but then cast it directly to int32_t. So it will cause a silent truncation.

<?php
$fmt = new NumberFormatter('en_US', NumberFormatter::DECIMAL);

$offset = PHP_INT_MAX;
var_dump($fmt->parse('123', NumberFormatter::TYPE_DOUBLE, $offset));
var_dump($offset);

returns

float(0)
int(-1)

In order to align with other previous fixes, we throw an error when the number is out of range