This PR was squashed before being merged into the 3.4 branch (closes#23793).
Discussion
----------
[VarDumper] Fix interval caster with PT3600S-like spec
| Q | A
| ------------- | ---
| Branch? | 3.4
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | /
| License | MIT
| Doc PR | /
According [ISO 8601](https://fr.wikipedia.org/wiki/ISO_8601):
> The standard does not prohibit date and time values in a duration representation from exceeding their "carry over points" except as noted below. Thus, "PT36H" could be used as well as "P1DT12H" for representing the same duration.
But this *breaks* ``interval`` representation, and this PR improves this.
```php
dump(new DateInterval('PT3600S'));
// before
DateInterval {
interval: + 00:00:3600.0
}
// after
DateInterval {
interval: + 01:00:00.0
}
```
Commits
-------
046f8c1 [VarDumper] Fix interval caster with PT3600S-like spec
