Hello,
To do what you want, you can simply use sscanf() function (That PHP function works like C sscanf() ). Check this:
$mandate = "1902-01-15"; // Or the result of a SQL query...
list($month, $day, $year) = sscanf($mandate,"%d-%d-%d");
The three variables $month, $day, $year are respectively set to the values read from the string $mandate. "%d" means that a numeric value (d stands for decimal) must be read.
Hope this helps 🙂