Numbers in PHP can’t be infinitely large or small, there is some minimum and maximum size. If more larger (or smaller) numbers are needed then . . . . . must be used:
1. GPM libraries
2. GMP libraries
3. CBMath
4. BCMath
A. Option 2 and 4
B. Option 3 and 4
C. Option 1 and 4
D. Option 2 and 3
Answer: Option A
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