PHP retrieves the first and last days of the week

Source: Internet
Author: User
Tags current time

// The first and last days of the week

The code is as follows: Copy code
$ Date = new DateTime ();
$ Date-> modify ('This Week ');
$ First_day_of_week = $ date-> format ('Y-m-D ');
$ Date-> modify ('this week + 6 days ');
$ End_day_of_week = $ date-> format ('Y-m-D ');


After testing modity, I did not know what to do. I found another two examples.

The code is as follows: Copy code

// Monday of the week

// @ $ Timestamp, a timestamp of a week. The default value is the current time.

// @ Is_return_timestamp, whether to return the timestamp; otherwise, the return time format

Function this_monday ($ timestamp = 0, $ is_return_timestamp = true ){

Static $ cache;

$ Id = $ timestamp. $ is_return_timestamp;

If (! Isset ($ cache [$ id]) {

If (! $ Timestamp) $ timestamp = time ();

$ Monday_date = date ('Y-m-D', $ timestamp-86400 * date ('W', $ timestamp) + (date ('W', $ timestamp)> 0? 86400:-/* 6*86400 */518400 ));

If ($ is_return_timestamp ){

$ Cache [$ id] = strtotime ($ monday_date );

} Else {

$ Cache [$ id] = $ monday_date;

}

}

Return $ cache [$ id];

 


}


// Sunday of the week

The code is as follows: Copy code

// @ $ Timestamp, a timestamp of a week. The default value is the current time.

// @ Is_return_timestamp, whether to return the timestamp; otherwise, the return time format

Function this_sunday ($ timestamp = 0, $ is_return_timestamp = true ){

Static $ cache;

$ Id = $ timestamp. $ is_return_timestamp;

If (! Isset ($ cache [$ id]) {

If (! $ Timestamp) $ timestamp = time ();

$ Sunday = this_monday ($ timestamp) +/* 6x86400 */518400;

If ($ is_return_timestamp ){

$ Cache [$ id] = $ Sunday;

} Else {

$ Cache [$ id] = date ('Y-m-D', $ Sunday );

}

}

Return $ cache [$ id];

}

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