date-range

问题 I have a function which returns all the dates between two dates in an array, But I need to exclude Sundays in that array. public function dateRange($first, $last, $step = '+1 day', $format = 'd/m/Y' ) { $dates = array(); $current = strtotime($first); $last = strtotime($last); while( $current <= $last ) { $dates[] = date($format, $current); $current = strtotime($step, $current); } return $dates; } After excluding the Sundays, I have a table where I will be storing some dates, I need to exclude

问题 I have a puzzle I've been trying to solve for ages now, but it's quite simply beyond me. I have a spreadsheet with 3 columns. Column A is instructor ID numbers, Column B is their course Start date and Column C is their course end date. There are multiple courses for each instructor ID. I'm basically trying to answer the question, what is the maximum number of courses this instructor is teaching at any given time. Essentially, I need to find, for each ID number, the number of maximum,

问题 We have a table used for assigning trainers to planned customer installations. In the table, there is a record for each trainer, for each day of the year. (We can, and sometimes do, work weekends.) I am building a search tool that allows our schedulers to search for a trainer that is available X number of days between dates Y and Z. Table mySchedule Trainer Date Dirty (Bit) ------------------------------------------------ Joe 06/01/2013 0 Jessica 06/01/2013 0 Alan 06/01/2013 0 Heather 06/01

问题 What would be the accepted convention for displaying a date range in a friendly URL? For example, in a time tracking application. Instead of using the database's primary key for a specific pay period in the URL, I would like to use something more easily distinguishable to the user. http://www.mytimesheet.com/11-1-2009-11-14-2009 http://www.mytimesheet.com/period-beginning-11-1-2009 Neither of those seem to cut it, but maybe I'm just being overly critical. 回答1: Have you considered ISO format

问题 Is there a way to combine 2 tables by serial number and using a date range from one table and dates from the other? I have 2 tables: table.events contains event data for a tracker, and table.dates contains the operational date of a tracker. A tracker can be in operation multiple times and as such, has a UID every time it is turned on. E.g. Tracker A can have the UID A1, A2, A3 etc. How can I combine table.events with data such as Date,Serial,Quality, 12/01/2019,A,1, 12/01/2019,B,2, 13/01/2019

问题 A table exists in Microsoft SQL Server with record ID, Start Date, End Date and Quantity. The idea is that for each record, the quantity/total days in range = daily quantity. Given that a table containing all possible dates exists, how can I generate a result set in SQL Server to look like the following example? EX: RecordID | Start Date | End Date | Quantity 1 | 1/1/2010 | 1/5/2010 | 30000 2 | 1/3/2010 | 1/9/2010 | 20000 3 | 1/1/2010 | 1/7/2010 | 10000 Results as 1 | 1/1/2010 | QTY (I can do

问题 I have two data sets in google app engine datastore. class First_Set(db.Model): start_time = db.DateTimeProperty() end_time = db.DateTimeProperty() data1 = db.FloatProperty() ... class Second_Set(db.Model): start_time = db.DateTimeProperty() end_time = db.DateTimeProperty() data2 = db.FloatProperty() ... (They have other different data that's why they're in different datasets.) I'd like to find the datastore IDs all the overlapping start_time and end_time across two datasets, ideally without

问题 I'm using the infamous jQuery UI's Datepicker, and in my form I select a range of two dates. First represents the starting date and the other represents the end date. What I need now is the algorthm, some tips and directions or helpers for calculating every Monday between these two dates. For instance: start: 2011-06-01 end: 2011-06-30 Should extract me these 4 (four) dates witch lay on Mondays: 1st: 2011-06-06 2nd: 2011-06-13 3rd: 2011-06-20 4th: 2011-06-27 How could I achive this? And also,

问题 I want to split the current month in to weeks like first day to saturday and then sunday to next saturday.For ex: for May month, So i want to split that like 2016-05-01 to 2016-05-07 2016-05-08 to 2016-05-14 2016-05-15 to 2016-05-21 2016-05-22 to 2016-05-28 2016-05-29 to 2016-05-31 if i try the below code,i didnt get exact result. <?php $start_date = date('Y-m-d', strtotime('2016-06-01')); $end_date = date('Y-m-d', strtotime('2016-06-30')); $i=1; for($date = $start_date; $date <= $end_date;

问题 I have a date range input function as follows in my ui for my shiny app. dateRangeInput("dates", "Date range", start = "2015-01-01", end = as.character(Sys.Date())) However I want a pop up message to correct the user if the user chooses a start date that is later than the end date, instead of an error in the app. How do i do this? Also is it possible to only allow the user to choose a date range which is more than, say x, days. 回答1: You can provide custom error messages with a validate