If omitted the current date and time will be used as in the examples above. The computer stores dates and times in a format called unix timestamp which measures time as number of seconds since the beginning of the unix epoch midnight greenwich mean time on january 1 1970 ie.
Php Date Time Function Quiz 4 Microtime Mktime
Timestamp to date php. The unix timestamp contains the number of seconds between the unix epoch january 1 1970 000000 gmt and the time specified. Change time to timestamp 3. Php date to timestamp. Convert timestamp to readable datetime in php solution. You want to do the opposite which is date. This function returns a string formatted according to the given format string using the given integer timestamp or the current time if no timestamp is given.
Daterfc1123 rfc 1123 example. Create a date with mktime the optional timestamp parameter in the date function specifies a timestamp. Change date format to numbers in php. 1970 01 01t000000zliterally speaking the epoch is unix time 0 midnight 111970 but epoch is often used as a synonym for unix time. The php mktime function returns the unix timestamp for a date. The typical mysql date format is datey m d his.
Why do we need the date function. Php convert formatted date into unixtime 2. This can be achieved with the help of date function which is an inbuilt function in php can be used to format the timestamp given by time function. Strtotime makes a date string into a timestamp. In 32 bit system the unix timestamp will overflow if the date goes beyond year 2038 and this method will return false. The valid range of a timestamp is typically from fri 13 dec 1901 204554 gmt to tue 19 jan 2038 031407 gmt.
Check the manual page for what other letters represent. Time since in php datetime object in seconds. The unix epoch or unix time or posix time or unix timestamp is the number of seconds that have elapsed since january 1 1970 midnight utcgmt not counting leap seconds in iso 8601. What is epoch time. In 64 bit systems this function will still work as intended. Unix time also known as posix time or epoch time is a system for describing instants in time defined as the number of seconds that have elapsed since 000000 coordinated universal time utc thursday 1 january 1970 not counting leap seconds.
Specifies an integer unix. If you have a timestamp that you want to use apparently you do it is the second argument of date. Fri 12 apr 2013 155201 0000 daterfc2822 rfc 2822 fri 12 apr 2013 155201 0000 daterfc3339 same as dateatom since php 513 daterss rss fri 12 aug 2013 155201 0000 datew3c world wide web consortium example. How to convert date format using php 1. The php date function converts a timestamp to a more readable date and time format. There are useful constants of standard datetime formats that can be used to specify the format parameter.
January 1 1970 000000 gmt. Converting javascript date string to php date 1.
Gallery of Timestamp To Date Php
