PHP | gmp_mod() Function

The gmp_mod() is an inbuilt function in PHP which is used to find the mudulo of a GMP number(GNU Multiple Precision: For large numbers) with another GMP number $d where the sign of $d is neglected.

Syntax:

gmp_mod ( $num, $d )

Parameters: The function accepts two GMP numbers $num and $d as mandatory parameters as 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 multiple numeric strings provided that it is possible to convert that string to a number.



Return Value: The function returns a GMP number which is equivalent to ($num % $d).

Examples:

Input : $num="8" $d="3" 
Output :  2

Input : $num="10" $d="4"
Output :  2

Below programs illustrate the gmp_mod() function:

Program 1: The program below demonstrates the working of gmp_mod() function when numeric string are passed as arguments.

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<?php
// PHP program to demonstrate the gmp_mod() function
  
// arguments as numeric strings 
$mod = gmp_mod("8", "3"); 
  
// prints the calculated modulous
echo gmp_strval($mod) . "\n";  
?>

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Output:

2

Program 2: The program below demonstrates the working of gmp_mod() when GMP number are passed as arguments.

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<?php
// PHP program to demonstrate the gmp_mod function
  
// arguments as GMP numbers
  
$num = gmp_init("1010", 2); // num = 10 
$d = gmp_init("100", 2);  // d = 4
  
$mod = gmp_mod($num, $d);
  
// prints the calculated modulous
// gmp_strval converts GMP number to string 
// representation in given base(default 10).
echo gmp_strval($mod) . "\n";  
?>

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Output:

2

Reference:
http://php.net/manual/en/function.gmp-mod.php



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