Specific application method of PHP strtotime function_PHP tutorial

In the next article, we will introduce the related usage of PHP strtotime function in detail. This function is still relatively unfamiliar to beginners. I hope that the content introduced in this article can help us improve our implementation of

: get the timestamp of a certain date, or get a certain The timestamp of the time.

PHP strtotime function parses the date and time description of any English text into a Unix timestamp [convert system time into a unix timestamp]

1. Get the unix timestamp of the specified date strtotime("2009-1-22") Example is as follows:

echo strtotime("2009-1-22") Result: 1232553600
Description: Return to 0:00 on January 22, 2009 0 minutes and 0 seconds timestamp

Second, the example of obtaining the English text date and time is as follows:

For easy comparison, use date to convert the current timestamp and the specified timestamp into the system Time

(1) Print the timestamp of tomorrow at this time strtotime("+1 day")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009 -01-22 09:40:25
Specify time: echo date(”Y-m-d H:i:s”,strtotime(”+1 day”)) Result: 2009-01-23 09:40:25

(2) Print the timestamp of yesterday at this time strtotime("-1 day")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01- 22 09:40:25
Specify time: echo date(”Y-m-d H:i:s”,strtotime(”-1 day”)) Result: 2009-01-21 09:40:25

(3) Print the timestamp at this time next week strtotime("+1 week")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40:25
Specify time: echo date("Y-m-d H:i:s",strtotime("+1 week")) Result: 2009-01-29 09:40:25

(4) Print the timestamp of last week strtotime("-1 week")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09 :40:25
Specify time: echo date("Y-m-d H:i:s",strtotime("-1 week")) Result: 2009-01-15 09:40:25

( 5) Print the timestamp of the specified day of the week strtotime("next Thursday")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40: 25
Specify time: echo date("Y-m-d H:i:s",strtotime("next Thursday")) Result: 2009-01-29 00:00:00

(6) Print specification Timestamp of last week's day strtotime("last Thursday")
Current time: echo date("Y-m-d H:i:s",time()) Result: 2009-01-22 09:40:25
Specify time: echo date("Y-m-d H:i:s",strtotime("last Thursday")) Result: 2009-01-15 00:00:00

As can be seen from the above example, strtotime can convert any English The date and time description of the text is parsed into a Unix timestamp. We use mktime() or date() to format the date and time to obtain the specified timestamp and achieve the required date and time.

The above is the specific concept of PHP strtotime function.