PHP gets a summary of various times (code)

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Get system time

Such as: The day before the system, the current time of the week Monday time, etc.

1. Get the current time of the system

echo "Date (' y-m-d ', Time ())";

2. Get the System one day before the time

echo "Date" ("Y-m-d", Strtotime ("-1 Day")) "; Minus (-) a few days before it takes a few days to add (+)

3. Get current system time last week of Monday and Sunday of the day

The date of last Sunday is $lastsunday = Date (' y-m-d ', Strtotime ('-1 Sunday ', Time ())),///based on the time difference minus 6 days ago, calculated last week 1st period $lastmonday = Date (' y-m-d ', Strtotime (' $lastSunday-6 day ', $SS));

4. Get the day of the current week Sunday is 0 weeks a to Saturday is 1-6

    $today = Date (' y-m-d ', Time ());    Gets the day ordinal of the current week Sunday is 0 weeks a to Saturday is 1-6      $w =date (' W ', Strtotime ($today));      $first =1;    Gets the start date of the week, if $w is 0, then represents Sunday, minus 6 days         $weekStart =date (' y-m-d 00:00:00 ', Strtotime ("$today-". $w? $w-$first: 6). ' Days ');                This week's end date      $weekEnd =date (' y-m-d 23:59:59 ', Strtotime ("$weekStart +6 Days");    The start time of the previous week    $weekStart = Date (' y-m-d 00:00:00 ', Strtotime ("$weekStart-7 Days");    $weekEnd = Date (' y-m-d 23:59:59 ', Strtotime ("$weekEnd-7 Days")););

5. How many days in the last one months

$t = date (' t ', Strtotime ('-1 month '));

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