Most computers store dates and times as UNIX timestamps, or simply timestamps. A timestamp is an integer that holds the number of seconds between midnight UTC on January 1, 1970 and the date and times to be stored (also in UTC). Example The date and time “February 14, 2007 16:48:12” in the GMT time zone …
Computers include Web servers, as well as your own PC and keep track of the current date and time using a built-in clock. You can access this clock’s value with the PHP time() function, which simply returns the current date and time as a timestamp: echo time(); // Displays e.g. “1229509316” You can use time() …
creating-your-own-timestamps The time() Function is useful for getting the current time but if you want to work with other dates and times. You can use various PHP functions to create timestamps for storing dates and times. There are three different types of Time Function: • mktime() • gmmktime() • strtotime()
The mktime() function returns a timestamp based on up to six time/date arguments, as follows: Hour (0 – 23) Minute (0 – 59) Second (0 – 59) Month (1 – 12) Day of the month (1 – 31) Year (1901 – 2038) Example To displays the timestamp corresponding to 2:32:12 pm on January 6, 1972: …
Creating Timestamps from Date and Time Values In PHP Read More »
mktime() assumes that the arguments you pass are in your computer’s time zone, it converts the supplied time to UTC so that it can be returned as a timestamp. However, sometimes it is useful to be able to store a date and time that is already in the GMT time zone. For example, many HTTP …
Creating Timestamps from GMT Date and Time Values Read More »
mktime() is great if you already have the individual numeric values for the date and time you want to store. However, often the PHP script will receive a date or time as a string. For example, if the script works with emails, it may need to handle message dates, which are normally represented in the …
Creating Timestamps from Date and Time Strings In PHP Read More »
Now you know how to create timestamps from time/date values and strings. You can also go the other way, and convert a timestamp to its corresponding date and time components. getdate() accepts a timestamp and returns an associative array of date/time values corresponding to the supplied timestamp. The array contains the following keys: Array Key …
Extracting Date and Time Values from a Timestamps In PHP Read More »