PHP Time Functions

Introduction: This is a detailed page of PHP time functions. It introduces related knowledge, skills, experiences, and some PHP source code.

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The time functions in PHP are as follows:

(1) Date

Usage:

Date (format, 1141064899 );

If there is no time parameter, the current time is used. The format is a string. The following characters have special meanings:

U is replaced with the number of seconds since the start time (like January 1, 1970), Y is replaced with the four-digit year number.

Y is replaced with the 2-digit year number.

F is replaced with the full name of the month.

M is replaced with the abbreviation of the month.

M is replaced with the monthly number of copies.

Z is replaced by the number of days since January 1 of the current year.

D. Replace it with the daily number.

L replace it with the full name of the day of the week.

D. Replace it with the abbreviation of the day of the week.

W is replaced with the day of the week (number ).

Replace h with the hour (in the 24-hour format ).

Replace h with the hour (in 12-hour format ).

Replace I with the number of minutes.

Replace s with the number of seconds.

A is replaced with "am" or "PM ".

A is replaced with "am" or "PM ".

S is replaced with a sequential numeric suffix, for example, "St", "nd", "RD", "th ".

The function returns a formatted string that has been replaced.

(2) getdate (time)

Returns a hash table with the following subscripts:

"Seconds" -- seconds

"Minutes" -- score

"Hours" -- hours

"Mday" -- Number of days

"Mon" -- number of months

"Year" -- year

"Yday" -- Number of days since January 1, January 1

"Weekday"-the day of the week.

"Month" -- month, full English name

(3) gmdate

Similar to date, but converts time to Greenwich mean time first.

(4) mktime

Usage:

Mktime (hours, scores, seconds, months, days, and years); returns a time value for other functions.

(5) Time

Usage:

Time (); returns the number of seconds since January 1, January 1, 1970.

(6) microtime

Usage:

Microtime (); returns a string, which is divided into two parts by space. The latter part is equivalent to time ()

The first part is the number of microseconds.

(7) checkdate

Usage:

Checkdate (month, day, year); returns logical truth or logical false. if:

The year is between 1900 and 32767 (including 1900 and 32767 );

The month is between 1 and 12;

The day is within the permitted number of days of the month (considering the leap year );

Returns the logical truth.

(8) set_time_limit

Usage:

Set_time_limit (seconds );

Starting from the running time of the sentenceProgramThe operation must end within the specified number of seconds. If the time-out period ends, the program exits due to an error.

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