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Php Program To Calculate Factorial
Here's a simple way way to convert a number to an ordinal number I created:$i the number to convert. Put this inside a for loop if you need to populate an array. The reason the bitwise AND ('&') operator works to determine whether a number is odd or even is because odd numbers expressed in binary always have the rightmost (2^0) bit = 1 and even numbers always have the 2^0 bit = 0.So if you do a ' 1 & $num', it will return zero if the number is even (since xxxxxxx0 the even number in binary and 00000001 the 1) don't share any bits, and will return 1 if the number is odd (xxxxxx1 and 000001).a clever way of doing things, but $num% 2 would work as well i think:).