Protobuf php lib encodes 123_000_000 nano like this: 2000-01-01T00:00:00.**123**Z but then it gets decoded into 123 nanoseconds instead of 123_000_000.
There were issue opened some time ago that also describes this behaviour #4335Closes#12396
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/12396 from kindratmakc:bugfix/inconsistent-timestamp-json-encode-decode df47c96567
PiperOrigin-RevId: 603118615
The PHPDoc escaping in PHP is aggressive in that it escapes some character sequences that don't need to be escaped (`/*`), and it uses HTML entities to escape others (`*/` and `@`) instead of the recommended PHPDoc escape sequences.
For Example, in [`Google\Api\RoutingParameter`](https://github.com/googleapis/common-protos-php/blob/main/src/Api/RoutingParameter.php#L42):
```
* path_template: "projects/*/{table_location=instances/*}/tables/*"
```
Should be escaped as:
```
* path_template: "projects/{@*}{table_location=instances/*}/tables/*"
```
according to [the PHPDoc guide](https://manual.phpdoc.org/HTMLframesConverter/default/phpDocumentor/tutorial_phpDocumentor.howto.pkg.html#basics.desc):
- For `@`: "if you need an actual "@" in your DocBlock's description parts, you should be careful to either ensure it is not the first character on a line, or else escape it ("\\@") to avoid it being interpreted as a PhpDocumentor tag marker."
- For `*/`: " If you need to use the closing comment "\*/" in a DocBlock, use the special escape sequence "{@*}."
Closes#11208
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/11208 from bshaffer:more-readable-phpdoc-escaping a75f9745ea
PiperOrigin-RevId: 603091642
Protobuf Team Bot
Saša Stamenković
Joshua Haberman
kindratmakc
Brent Shaffer
Dennis Shao
Sandy Zhang