PHP MATHS [ Power function]

[razzbee]

9 power can be expressed as :

<?
echo pow(19, 5);

?>

Random numbers can be done this way

echo rand();  //this method is slow

echo mt_rand(); //this method is faster 4 times than the above one 

Ronding floating points numbers to any significant digits

echo round("20.937353",2);
//we rounded the floating number to 2 significants digits