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PHP Manual Date/Time Functions checkdate date date_add date_create date_create_from_format date_create_immutable date_create_immutable_from _format date_date_set date_default_timezone_get date_default_timezone_set date_diff date_format date_get_last_errors date_interval_create_from _date_string date_interval_format date_isodate_set date_modify date_offset_get date_parse date_parse_from_format date_sub date_sun_info date_time_set date_timestamp_get date_timestamp_set date_timezone_get date_timezone_set getdate gettimeofday gmdate gmmktime idate localtime microtime mktime strtotime time timezone_abbreviations_list timezone_identifiers_list timezone_location_get timezone_name_from_abbr timezone_name_get timezone_offset_get timezone_open timezone_transitions_get timezone_version_get Deprecated date_sunrise date_sunset gmstrftime strftime strptime   date date_create Date/Time Functions Last updated: Mon, 26 Oct 2026 date_add (PHP 5 >= 5.3.0, PHP 7, PHP 8) date_add — Alias of DateTime::add() Description This function is an alias of: DateTime::add() date date_create Date/Time Functions Last updated: Mon, 26 Oct 2026

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