The gmp_sub() is an in-built function in PHP which returns the subtraction of the two GMP numbers.(
GNU Multiple Precision: For large numbers)
Syntax:
gmp_sub($num1, $num2)
Parameters: This function accepts two GMP numbers
$num1 and
$num2 as mandatory parameters shown in the above syntax. These parameters can be a GMP object in PHP version 5.6 and later, or we are also allowed to pass a numeric string provided that it is possible to convert that string to a number.
Return Value: The function returns the subtraction of two numbers $num1 and $num2.
Examples:
Input : $num1=5 , $num2=10
Output : -5
Input : $num1=7 , $num2=1
Output : 6
Below programs illustrate the
gmp_sub() function:
Program 1: The program below demonstrates the working of gmp_sub() function when GMP number are passed as arguments.
Output:
-101
Program 2: The program below demonstrates the working of gmp_sub() when numeric string are passed as arguments.
Output:
6
Reference:
https://www.php.net/manual/en/function.gmp-sub.php
