What does I mean in date in php
This article mainly introduces what I express in date in php, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.
In php, I in date is the uppercase form of I, indicating whether the date is at daylight saving time, 1 if it is daylight saving time, otherwise 0, while lowercase I indicates "score" with leading 00s to 59.
This article operating environment: Windows7 system, PHP7.1, Dell G3 computer.
The date () function formats the local date and time and returns the formatted date string.
Syntax: date (format,timestamp)
The meaning of each letter in PHP date date function
There are some characters with predefined meanings that you can use to create format strings. They are:
Format is required. Specifies the format of the output date string. The following characters can be used: d-the day of the month (from 01 to 31) D-the text representation of the day of the week (in three letters) j-the day of the month without leading zeros (1 to 31) l (lowercase form of'L')-the full text of the day of the week represents the N-day of the week in ISO-8601 numeric format (1 for Monday [Monday]) 7 for Sunday) S-the English ordinal suffix (2 characters: st, nd, rd, or th) of the day of the month. Used with j) the numeric representation of the day of the week (0 for Sunday [Sunday] 6 for Saturday [Saturday]) z-Day of the year (from 0 to 365) W-number of the week of the year in ISO-8601 numeric format (starting each week from Monday [Monday]) full text representation of F-month (January [January] to December [December]) number of m-month (from 01 to 12) short text representation of M-month (in three The numeric representation of n-month No leading zero (1 to 12) t-number of days contained in a given month L-whether it is a leap year (1 if it is a leap year, otherwise 0) year number Y-year four digits under o-ISO-8601 standard y-year two-digit representation a-lowercase form: am or pmA-uppercase form: AM or PMB-Swatch Internet Time (000 to 999) g-12 hours Without leading zero (1 to 12) G-24 hours, without leading zeros (0 to 23) h-12 hours, with leading zeros (01 to 12) H-24 hours, with leading zeros (00 to 23) I-minutes, with leading zeros (00 to 59) s-seconds With leading zero (00 to 59) u-microseconds (new in PHP 5.2.2) e-time zone identifier (e.g. UTC, GMT, Atlantic/Azores) I (uppercase form of I)-whether the date is at daylight saving time (1 if it is daylight saving time, otherwise 0) the difference of O-Greenwich mean time (GMT) in hours (example: + 0100) P-Greenwich mean time (GMT) The unit is the abbreviation for hours:minutes (new in PHP 5.1.3) T-time zone (example: EST, MDT) Z-time zone offset in seconds. UTC uses a negative offset from the western time zone (- 43200 to 50400) c-ISO-8601 standard date (e.g. 2013-05-05T16:34:42+00:00) r-RFC 2822 format date (e.g. Fri, 12 Apr 2013 12:01:05 + 0200) U-seconds have elapsed since the Unix era (January 1 1970 00:00:00 GMT) The following predefined constants (available since PHP 5.1.0) can also be used: DATE_ATOM-Atom (e.g. 2013-04-12T15:52:01+00:00) DATE_COOKIE-HTTP Cookies (e.g. Friday, 12-Apr-13 15:52:01 UTC) DATE_ISO8601-ISO-8601 (e.g. 2013-04-12T15:52:01+0000) DATE_RFC822-RFC822 (e.g. Fri, 12 Apr 13 155mono 0114000) DATE_RFC850-RFC850 (e.g. Friday 12-Apr-13 15:52:01 UTC) DATE_RFC1036-RFC1036 (e.g. Fri, 12 Apr 13 15:52:01 + 0000) DATE_RFC1123-RFC1123 (e.g. Fri, 12 Apr 2013 15:52:01 + 0000) DATE_RFC2822-RFC2822 (Fri, 12 Apr 2013 15:52:01 + 0000) DATE_RFC3339-same as DATE_ATOM (starting with PHP 5.1.3) DATE_RSS-RSS (Fri 12 Aug 2013 15 12T15:52:01+00:00 52VR 01 + 0000) DATE_W3C-World wide Web Consortium (for example: 2013-04-12T15:52:01+00:00)
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