How PHP gets the date based on the year and week number

!--? php function getweekdate ($year, $weeknum) { $firstdayofyear =mktime (0,0,0,1,1, $year); $firstweekday =date (' N ', $firstdayofyear); $firstweenum =date (' W ', $firstdayofyear); if ($firstweenum ==1) { $day = (n ($firstweekday-1)) +7* ($weeknum-1); $startdate =date (' y-m-d ', Mktime (0,0,0,1, $day, $year)); $enddate =date (' y-m-d ', Mktime (0,0,0,1, $day +6, $year)); }else{ $day = (9-$firstweekday) +7* ($weeknum-1); $startdate =date (' y-m-d ', Mktime (0,0,0,1, $day, $year)); $enddate =date (' y-m-d ', Mktime (0,0,0,1, $day +6, $year)); } return Array ($startdate, $enddate); } ? copy code articles you might be interested in: PHP Number_format () keep several PHP decimal points after the decimal point to keep a few simple examples of PHP decimal rounding Method (with instance) php two-bit after the decimal point three ways to implement

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