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<?php var_dump(new \DateTime('first day of last month 0:00:00 UTC'));
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
object(DateTime)#1 (3) { ["date"]=> string(26) "2026-03-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
preferences:
48.58 ms | 708 KiB | 4 Q