Day of week: Difference between revisions

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m (→‎Weekday: modify the order)
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! Last week
! Last week
| MySQL: {{kbd | key=<nowiki>SELECT CURDATE() + INTERVAL -8 - WEEKDAY(CURDATE()) DAY;</nowiki>}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())-6</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("Sunday -14 day")) . PHP_EOL;</nowiki>}}
| MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">-8</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())-6</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("Sunday -14 day")) . PHP_EOL;</nowiki>}}
| MySQL: {{kbd | key=<nowiki>SELECT CURDATE() + INTERVAL -7 - WEEKDAY(CURDATE()) DAY;</nowiki>}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())-5</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("monday this week -7 day")) . PHP_EOL;</nowiki>}}
| MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">-7</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())-5</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("monday this week -7 day")) . PHP_EOL;</nowiki>}}
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| MySQL: {{kbd | key=<nowiki>SELECT CURDATE() - INTERVAL 2 - WEEKDAY(CURDATE()) DAY;</nowiki>}} <br /> PHP<ref>[https://stackoverflow.com/questions/3742820/php-how-to-get-previous-sunday-of-a-specific-date-in-the-past PHP: How to get previous Sunday of a specific date in the past..? - Stack Overflow]</ref>: (1) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("last Saturday")) . PHP_EOL;</nowiki>}} (2) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime('last Saturday', strtotime("2018-03-04 00:01:00"))) . PHP_EOL;</nowiki>}}
| MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">-2</span> - WEEKDAY(CURDATE()) DAY;}} <br /> PHP<ref>[https://stackoverflow.com/questions/3742820/php-how-to-get-previous-sunday-of-a-specific-date-in-the-past PHP: How to get previous Sunday of a specific date in the past..? - Stack Overflow]</ref>: (1) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("last Saturday")) . PHP_EOL;</nowiki>}} (2) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime('last Saturday', strtotime("2018-03-04 00:01:00"))) . PHP_EOL;</nowiki>}}
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! This week
! This week
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! Next week
! Next week
| MySQL: {{kbd | key=<nowiki>SELECT CURDATE() + INTERVAL 6 - WEEKDAY(CURDATE()) DAY;</nowiki>}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+8</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("Sunday")) . PHP_EOL;</nowiki>}}
| MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">6</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+8</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("Sunday")) . PHP_EOL;</nowiki>}}
| MySQL: {{kbd | key=<nowiki>SELECT CURDATE() + INTERVAL 7 - WEEKDAY(CURDATE()) DAY;</nowiki>}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+9</nowiki>}}<br />PHP: (1) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("next monday")) . PHP_EOL;</nowiki>}} (2) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("monday this week +7 day")) . PHP_EOL;</nowiki>}}
| MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">7</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+9</nowiki>}}<br />PHP: (1) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("next monday")) . PHP_EOL;</nowiki>}} (2) {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("monday this week +7 day")) . PHP_EOL;</nowiki>}}
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Revision as of 17:07, 2 January 2019

Numeric representation of the day of the week. MySQL, Excel or PHP approaches to specify these date time.

Weekday

The value of weekday obtained from different approaches.

Weekday values from different approaches Sunday Monday Tuesday Wednesday Thursday Friday Saturday
PHP date with N format character: Weekday (ISO-8601) 7 1 2 3 4 5 6
MySQL WEEKDAY() function 6 0 1 2 3 4 5
MySQL DAYOFWEEK() Function 1 2 3 4 5 6 7
Excel WEEKDAY() function 1 2 3 4 5 6 7
PHP date with w format character 0 1 2 3 4 5 6

Get the date

Get the date of weekday from another known date (today or another specific day)

Day Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Last week MySQL: SELECT CURDATE() + INTERVAL -8 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())-6
PHP: echo date('Y-m-d', strtotime("Sunday -14 day")) . PHP_EOL; 		MySQL: SELECT CURDATE() + INTERVAL -7 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())-5
PHP: echo date('Y-m-d', strtotime("monday this week -7 day")) . PHP_EOL; 		MySQL: SELECT CURDATE() + INTERVAL -2 - WEEKDAY(CURDATE()) DAY;
PHP[1]: (1) echo date('Y-m-d', strtotime("last Saturday")) . PHP_EOL; (2) echo date('Y-m-d', strtotime('last Saturday', strtotime("2018-03-04 00:01:00"))) . PHP_EOL;
This week MySQL: SELECT CURDATE() + INTERVAL -1 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+1
PHP: echo date('Y-m-d', strtotime("Sunday -7 day")) . PHP_EOL; 		MySQL: SELECT CURDATE() + INTERVAL 0 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+2
PHP: echo date('Y-m-d', strtotime("monday this week")) . PHP_EOL; 		MySQL: SELECT CURDATE() + INTERVAL 1 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+3 		MySQL: SELECT CURDATE() + INTERVAL 2 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+4 		MySQL: SELECT CURDATE() + INTERVAL 3 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+5 		MySQL: SELECT CURDATE() + INTERVAL 4 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+6 		MySQL: SELECT CURDATE() + INTERVAL 5 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+7
PHP: echo date('Y-m-d', strtotime("Saturday")) . PHP_EOL;
Next week MySQL: SELECT CURDATE() + INTERVAL 6 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+8
PHP: echo date('Y-m-d', strtotime("Sunday")) . PHP_EOL; 		MySQL: SELECT CURDATE() + INTERVAL 7 - WEEKDAY(CURDATE()) DAY;
Excel: =TODAY()-WEEKDAY(NOW())+9
PHP: (1) echo date('Y-m-d', strtotime("next monday")) . PHP_EOL; (2) echo date('Y-m-d', strtotime("monday this week +7 day")) . PHP_EOL;

References

  1. ↑ PHP: How to get previous Sunday of a specific date in the past..? - Stack Overflow

Further reading

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