The gmp_pow() is an inbuilt function in PHP which is used to calculate the power raised to a number of a GMP number and an integer (GNU Multiple Precision: For large numbers).
Syntax:
gmp_pow( $base, $exp )
Parameters: The function accepts two mandatory parameters $base and $exp.
- $base – It is the base number. This parameter 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.
- $exp – It is the power which is raised to the base
Return Value: This function returns a positive GMP number which is equivalent to $base$exp
Examples:
Input : $base = "2" $exp = 2 Output : 4 Input : $base = "0" $exp = 0 Output : 1
Below programs illustrate the gmp_pow() function:
Program 1: The program below demonstrates the working of gmp_pow() function when GMP number is passed as an argument.
<?php // PHP program to calculate power raised // to a number // GMP number as argument $base = gmp_init("100", 2); $exp = 2; // function calculates the pow raised to // number $pow = gmp_pow($base, $exp); // 4^2 // gmp_strval Convert GMP number to string // representation in given base(default 10). echo gmp_strval($pow, 2) . "\n"; ?> |
Output:
10000
Program 2: The program below demonstrates the working of gmp_pow() when numeric string is passed as an argument.
<?php // PHP program to calculate power raised // to a number // numeric string as argument $base = "4"; $exp = 2; // function calculates the pow raised to // number 4^2 $pow = gmp_pow($base, $exp); echo $pow; ?> |
Output:
10000
