strtotime() does not return correct value when specifying date in dd/mm/yyyy format

[NayuaGROVE]

I want to convert date \[code\]24/09/2010\[/code\] in format \[code\]dd/mm/yyyy\[/code\] to \[code\]2010-09-24\[/code\] in format \[code\]yyyy-mm-dd\[/code\].This works:\[code\]date("Y-m-d",strtotime("09/24/2010"));\[/code\]But this does not:\[code\]date("Y-m-d",strtotime("24/09/2010")); // it returns '1970-01-01'\[/code\]Any idea why?