Enhance PHPDoc #2466

Job	Run time
Run code style check (8.0)	2m 35s
Solr integration tests (7.4)	13m 19s
Solr integration tests (8.0)	14m 23s
Solr integration tests (8.1)	13m 2s
Unit tests & SQLite integration tests (7.4)	9m 14s
Unit tests & SQLite integration tests (8.0)	9m 13s
Unit tests & SQLite integration tests (8.1)	8m 49s
PostgreSQL integration tests (7.4)	32m 4s
MySQL integration tests (7.4)	14m 48s
PostgreSQL integration tests (8.0)	26m 14s
MySQL integration tests (8.0)	14m 36s
PostgreSQL integration tests (8.1)	23m 53s
MySQL integration tests (8.1)	14m 33s
	3h 16m 43s

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