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Day of week: Difference between revisions
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== Weekday == | == Weekday == | ||
The value of weekday obtained from different approaches. | |||
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! [https://www.w3schools.com/sql/func_mysql_dayofweek.asp MySQL DAYOFWEEK() Function] | |||
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! [https://support.office.com/zh-tw/article/WEEKDAY-%E5%87%BD%E6%95%B8-60e44483-2ed1-439f-8bd0-e404c190949a Excel WEEKDAY() function] | ! [https://support.office.com/zh-tw/article/WEEKDAY-%E5%87%BD%E6%95%B8-60e44483-2ed1-439f-8bd0-e404c190949a Excel WEEKDAY() function] | ||
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== Get the date == | == Get the date == | ||
Get the date of weekday from another known date (today or another specific day) | |||
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! Last week | ! Last week | ||
| MySQL: {{kbd | key= | | 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= | | 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=SELECT CURDATE() + INTERVAL <span class="hightlight">-3</span> - WEEKDAY(CURDATE()) DAY;}} <br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime('Friday -7 day')) . 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 | ||
| MySQL: {{kbd | key= | | MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">-1</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+1</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("Sunday -7 day")) . PHP_EOL;</nowiki>}} | ||
| MySQL: {{kbd | key= | | MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">0</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+2</nowiki>}}<br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("monday this week")) . PHP_EOL;</nowiki>}} | ||
| MySQL: {{kbd | key= | | MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">1</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+3</nowiki>}} | ||
| MySQL: {{kbd | key= | | MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">2</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+4</nowiki>}} | ||
| MySQL: {{kbd | key= | | MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">3</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+5</nowiki>}} | ||
| MySQL: {{kbd | key= | | MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">4</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('Friday')) . PHP_EOL;</nowiki>}} | ||
| MySQL: {{kbd | key= | | MySQL: {{kbd | key=SELECT CURDATE() + INTERVAL <span class="hightlight">5</span> - WEEKDAY(CURDATE()) DAY;}} <br />Excel: {{kbd | key=<nowiki>=TODAY()-WEEKDAY(NOW())+7</nowiki>}} <br />PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime("Saturday")) . PHP_EOL;</nowiki>}} | ||
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! Next week | ! Next week | ||
| MySQL: {{kbd | key= | | 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= | | 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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| PHP: {{kbd | key=<nowiki>echo date('Y-m-d', strtotime('Friday +7 day')) . PHP_EOL;</nowiki>}} | |||
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== References == | == References == | ||