Regression in 8.5: float values are treated as invalid when updating LDAP values

Description

The following code:

<?php
ldap_modify($ds, $dn, ['shadowlastchange' => round(time() / (24*3600))]);

Resulted in this output:

LDAP value must be of type string|int|bool, float given (0)

But I expected this output instead:

no output, the operation succeeded before

Problem is caused by php_ldap_try_get_ldap_value_from_zval and used by he following commit: https://github.com/php/php-src/commit/636b6a1a59efe655a17e9a4a2d67865b53babe0c

I can obviously now cast all these kind of timestamp calculations with round(...) to int: (int)round(...), but this is existing code which worked for 10+ years.

So the question is: was that BC breach intended, or does it make sense to handle that cast to int automatically in php_ldap_try_get_ldap_value_from_zval?

Ralf

PHP Version

PHP 8.5.5 (cli) (built: Apr 11 2026 06:53:07) (NTS)
Copyright (c) The PHP Group
Built by Debian
Zend Engine v4.5.5, Copyright (c) Zend Technologies
    with Zend OPcache v8.5.5, Copyright (c), by Zend Technologies

Operating System

No response