How do you check difference between DateTime string coming from SQL php and current time from clock in MIT app inventor?

In my application I have php script running on server which returns a date time in the format "yyyy-mm-dd hh:mm:ss" is there any way to find the duration between this and the current time via clock?

You have to convert date to MM/DD/YYYY hh:mm:ss format. You can create a procedure for that like (blocks are draggable)

and then get difference in millis. In below example I use [FREE] Time Format Extension - Millis to [HH:mm:ss] - [days + HH:mm:ss] - [HH:mm] - [mm:ss] etc to get duration



  • change all / and - to blanks to get only blank delimiters (two chained replace text blocks)
  • split the resultant text at blanks to get a list of datetime parts in descending order of magnitude (one block)
  • Feed the 6 datetime parts into parameters of the Clock block that builds an Instant from parts
  • Take Duration between Clock1.Now() and your Instant
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