docs: format & fix php errors #2166

Job	Run time
Unit tests (lowest, 8.1, ubuntu-latest)	25s
Unit tests (lowest, 8.1, windows-latest)	47s
Unit tests (lowest, 8.2, ubuntu-latest)	22s
Unit tests (lowest, 8.2, windows-latest)	43s
Unit tests (lowest, 8.3, ubuntu-latest)	32s
Unit tests (lowest, 8.3, windows-latest)	1m 1s
Unit tests (highest, 8.1, ubuntu-latest)	20s
Unit tests (highest, 8.1, windows-latest)	58s
Unit tests (highest, 8.2, ubuntu-latest)	24s
Unit tests (highest, 8.2, windows-latest)	50s
Unit tests (highest, 8.3, ubuntu-latest)	25s
Unit tests (highest, 8.3, windows-latest)	39s
Unit tests (locked, 8.3, ubuntu-latest)	12s
Unit tests (locked, 8.3, windows-latest)	36s
	8m 14s

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