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PHP | gmp_xor() Function

The gmp_xor() is an in-built function in PHP which is used to calculate the XOR of 2 GMP numbers (GNU Multiple Precision : For large numbers).

Syntax:

gmp_xor( $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: This function returns a positive GMP number which is the XOR of $num1 and $num2.

Examples:



Input : $num1 = "3" $num2 = "5"
Output : 6

Input : $num1 = 1 $num2 = 1
Output : 0 

Below programs illustrate the gmp_xor() function:

Program 1: The program calculates the XOR of two numbers when numeric strings as GMP numbers are passed as arguments.

<?php
// PHP program to calculate the XOR 
// of two numbers using gmp_xor() 
  
// numeric string passed as arguments 
$xor = gmp_xor("3", "5"); 
  
// prints the GMP number which xor 
// of two numeric strings 
echo $xor;
   
?>

Output:

6

Program 2: The program calculates the XOR of two numbers when GMP numbers are passed as arguments.

<?php
// PHP program to calculate XOR 
// of two numbers 
  
// GMP numbers passed as arguments 
$xor1 = gmp_init("1101101110", 2);
$xor2 = gmp_init("0110011001", 2);
  
// function calculates the XOR of two numbers 
$xor3 = gmp_xor($xor1, $xor2);
  
// prints the GMP number which is the 
// XOR of two GMP numbers 
// gmp_strval Convert GMP number to string
//  representation in given base(default 10).
echo gmp_strval($xor3, 2);
?>

Output:

1011110111

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



This article is attributed to GeeksforGeeks.org

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