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SQL Server FAQ - PHP MSSQL - Computing Date and Time Differences

By: FYIcenter.com

(Continued from previous topic...)

PHP MSSQL - How To Display a Past Time in Days, Hours and Minutes?

You have seen a lots of Websites are displaying past times in days, hours and minutes. If you want to do this yourself, you can use the DATEDIFF() SQL function The following tutorial exercise shows you how to use DATEDIFF() to present a past time in days, hours, and minutes:

<?php
  $con = mssql_connect('LOCALHOST','sa','FYIcenter');
  mssql_select_db('FyiCenterData', $con);

  $submit_time = "2007-05-29 04:09:49";
  $sql = "SELECT 'Posted '"
    . " + CONVERT(VARCHAR(40)," 
    . " DATEDIFF(minute, '$submit_time'," 
    . " GETDATE())/(24*60))"
    . " + ' days, '"
    . " + CONVERT(VARCHAR(40),"
    . " DATEDIFF(minute, '$submit_time',"
    . " GETDATE())%(24*60)/60)"
    . " + ' hours, and '"
    . " + CONVERT(VARCHAR(40)," 
    . " DATEDIFF(minute, '$submit_time',"
    . " GETDATE())%60)"
    . " + ' minutes ago.'";
  print("\n$sql\n");

  $res = mssql_query($sql, $con);
  if (!$res) {
    print("SQL statement failed with error:\n");
    print("   ".mssql_get_last_message()."\n");
  } else {
    $row = mssql_fetch_row($res);
    $message = $row[0];
    print("\n$message\n");
  }
  
  mssql_close($con); 

If today is you run this script, you will get something like this:

SELECT 'Posted ' + CONVERT(VARCHAR(40), 
DATEDIFF(minute, '2007-05-29 04:09:49', 
GETDATE())/(24*60))
+ ' days, ' + CONVERT(VARCHAR(40),  
DATEDIFF(minute, '2007-05-29 04:09:49', 
GETDATE())%(24*60)/60) 
+ ' hours, and ' + CONVERT(VARCHAR(40),
DATEDIFF(minute, '2007-05-29 04:09:49', 
GETDATE())%60) 
+ ' minutes ago.'

Posted 26 days, 16 hours, and 15 minutes ago.

(Continued on next topic...)

  1. PHP MSSQL - How To Create a New Table?
  2. PHP MSSQL - How To Drop an Existing Table?
  3. PHP MSSQL - How To Insert Data into an Existing Table?
  4. PHP MSSQL - How To Make a Column Nullable?
  5. PHP MSSQL - How To Insert Data with NULL Values?
  6. PHP MSSQL - How To Insert Multiple Rows with a subquery?
  7. PHP MSSQL - How To Get the Number of Affected Rows?
  8. PHP MSSQL - What Is a Result Set Object Returned by mssql_query()?
  9. PHP MSSQL - How To Loop through Returning Rows?
  10. PHP MSSQL - How To Update Existing Rows in a Table?
  11. PHP MSSQL - How To Delete Existing Rows in a Table?
  12. PHP MSSQL - How To Include Text Values in SQL Statements?
  13. PHP MSSQL - How To Include Date and Time Values in SQL Statements?
  14. PHP MSSQL - How To Display a Past Time in Days, Hours and Minutes?
  15. PHP MSSQL - How To Perform Key Word Search in Tables?
  16. PHP MSSQL - How To Query Multiple Tables Jointly?
  17. PHP MSSQL - How To Create an Identity Column?

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