PHP Date Difference : MonthDiff DateDiff YearDiff

Here is the code to do that. 

$d1=mktime(22,0,0,1,1,2007);

$d2=mktime(0,0,0,1,2,2007);

echo "Hours difference = ".floor(($d2-$d1)/3600) . "<br>";

echo "Minutes difference = ".floor(($d2-$d1)/60) . "<br>";

echo "Seconds difference = " .($d2-$d1). "<br>";

echo "Month difference = ".floor(($d2-$d1)/2628000) . "<br>";

echo "Days difference = ".floor(($d2-$d1)/86400) . "<br>";

echo "Year difference = ".floor(($d2-$d1)/31536000) . "<br>";