[php-src] Issue #9763: DateTimeZone ctr mishandles input and adds null byte if the argument is an offset larger than 100*60 minutes

Issue: https://github.com/php/php-src/issues/9763 Author: Daimona ### Description One of the formats accepted by DateTimeZone::__construct is UTC offset, e.g., "+02:00". The method validates the argument to make sure it's valid, rejecting malformed strings like "somethingInvalid"; since PHP 8.0, this validation was improved and the method also rejects arguments like "+somtehingInvalid" that were previously accepted. Another thing that is validated is the offset itself, provided it's not malformed. Until PHP 8.0.9, if the hours in the offset were > 99 PHP would accept the input, but return a potentially unexpected result: for instance, "+100:00" was interpreted as "+00:00"; in PHP 8.0.10 - 8.1.6 the same input would throw an exception, and in later version it's accepted again, but interpreted as "+01:00", see [3v4l](https://3v4l.org/Tma71). I've no idea why this was changed twice, and I'm also not here to say how it should behave. Instead, the bug I'm reporting here (discovered by @claudiomelo) happens when you set the hours to 99, but also set the minutes to something larger than 60, which would make the offset effectively larger than 60*100 minutes. For instance, the following code: ```php <?php $d = new DateTimeZone( "+99:62" ); $n = $d->getName(); var_dump($d,$d->getName()); $d2 = new DateTimeZone( $n ); ``` Resulted in this output ([3v4l](https://3v4l.org/l7tiQ)): ``` object(DateTimeZone)#1 (2) { ["timezone_type"]=> int(1) ["timezone"]=> string(7) "+100:0" } string(7) "+100:0" Fatal error: Uncaught ValueError: DateTimeZone::__construct(): Argument #1 ($timezone) must not contain any null bytes in /in/l7tiQ:6 ``` I'm not quite sure what the expected output should be, given that handling of +100:02 (equivalent to +99:62) was changed a few times. Maybe it should reject the input, maybe it should treat it exactly the same as +100:02 would be treated. At any rate, it should certainly not truncate the input and add a null byte, which also makes the result unusable. ### PHP Version PHP 8.2rc3 ### Operating System _No response_