PHP mktime() function

PHP microtime() function
PHP strftime() function

What is the syntax of the mktime() function in PHP?

mktime(hour, minute, second, month, day, year, is_dst);
hourOptional. Specifies the hour
minuteOptional. Specifies the minute
secondOptional. Specifies the second
monthOptional. Specifies the month
dayOptional. Specifies the day
yearOptional. Specifies the year
is_dstOptional. Set this parameter to 1 if the time is during daylight savings time (DST), 0 if it is not, or -1 (the default) if it is unknown. If it’s unknown, PHP tries to find out itself (which may cause unexpected results). Note: This parameter is removed in PHP 7.0. The new timezone handling features should be used instead

Examples of the mktime() function

Example 1. In this example,

// Prints: October 3, 1975 was on a Friday
echo "Oct 3, 1975 was on a ".date("l", mktime(0,0,0,10,3,1975));
PHP microtime() function
PHP strftime() function
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