How to convert php timestamp back to date

In PHP, you can use the date() function to convert the timestamp back to date format. The date() function can format the timestamp into a more readable date and time format, with the syntax "date (format, timestamp)"; the format parameter specifies the converted timestamp format, for example "Y-m-d H:i: s".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Time stamp to date date()

PHP date() function can format the timestamp into a more readable date and time.

A timestamp is a character sequence that represents the date/time when a certain event occurred.

Syntax:

date(format,timestamp)

• format Required. Specifies the format of the timestamp.

• timestamp Optional. Specify timestamp. The default is the current time and date

The first required parameter format of the date() function specifies how to format the date/time.

For example: date('Y-m-d H:i:s', specific timestamp)

• Y: Year (four digits) in uppercase letters

• m: Month (two digits, add 0 if the first digit is missing) Lowercase

• d: Day (two digits, add 0 if the first digit is missing) ) Lowercase

• H: 24-hour hour format with a leading zero for the hour

• h: 12-hour hour format with a leading zero for the hour

• i: Minutes with leading zero

• s: Seconds with leading zero (00 -59)

• a: Lowercase noon and afternoon (am or pm)

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Case distinction is very important, such as the following example:

var_dump(date('Y-m-d H:i:s', 1502204401)); //H 24小时制 2017-08-08 23:00:01 
var_dump(date('Y-m-d h:i:s', 1502204401)); //h 12小时制 2017-08-08 11:00:01

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