[PHP] Back to the basics (date function and strtotime function), datestrtotime_PHP tutorial

[PHP] Back to the basics (date function and strtotime function), datestrtotime

date(): Format a local time or date, the current time is May 13, 2016 15:19:49

Use the function date() to output the current day of the month. Parameter: String type d

For example: echo date("d"); output 13

Use the function date() to output the current day of the week. Parameter: String type D or N

For example: echo date("D"); output Fri

echo date("N"); output 5

echo date("l"); output Friday

Use the function date() to output the month in the current month. Parameter: String type n

echo date("n"); output 5

Use the function date() to determine whether the current year is a leap year. Parameter: String type L

echo date("L"); output 1

strtotime(): Convert string type date format into timestamp

Use the function strtotime() to print the previous day’s date. Parameter: String type “-1 day”

echo date("Y-m-d H:i:s",strtotime("-1day")); output 2016-05-12 15:27:33

Use the function strtotime() to print tomorrow’s date, parameter: String type “1 day”

echo date("Y-m-d H:i:s",strtotime(" 1 day")); output 2016-05-14 15:28:29

Use function strtotime() to print next week’s date, parameter: String type “1 week”

echo date("Y-m-d H:i:s",strtotime(" 1 week"));;Output 2016-05-20 15:29:35

Use the function strtotime() to print the date of the next month. Parameter: String type “1 month”

echo date("Y-m-d H:i:s",strtotime(" 1 month")); Output: 2016-06-13 15:37:42

Use the function strtotime() to print next Monday’s date. Parameter: String type “last Mondy”

echo date("Y-m-d H:i:s",strtotime("next Monday")); Output: 2016-05-16 00:00:00

Use the function strtotime() to print the date next week, two days, two hours and two seconds later. Parameters: String type combination

echo date("Y-m-d H:i:s",strtotime(" 1 week 2 day 2 hour")); Output 2016-05-22 17:34:34

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java version:

java.util.Date class

Get the Date object and new comes out

Call the getTime() method of the Date object to obtain the timestamp (millisecond value)

java.text.SimpleDateFormat class

Get the SimpleDateFormat object, new comes out, construction parameters: "yyyy-MM-dd hh:mm:ss"

Call the format() method of the SimpleDateFormat object to obtain the date of String type. Parameter: Date object

For example:

Date date=new Date();

SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

System.out.println(format.format(date));

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