The gmp_abs() is an in built function in PHP which is used to calculate the absolute value of a GMP number (GNU Multiple Precision : For large numbers).
Syntax :
gmp_abs( $num )
Parameters : This function accepts a GMP number as parameter as shown in the above syntax. It can be a GMP object in PHP version 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.This function calculates the absolute value of this number and returns it.
Return Value : This function returns a positive GMP number which is the absolute value of the number passed as parameter.
Examples:
Input : "16497863358" Output : 16497863358 Input : "-16497863358" Output : 16497863358
Below programs illustrate the use of gmp_abs() function in PHP :
Program 1:
<?php   // Passing a positive number // as a numeric string $val1 = gmp_abs("16497863358");   // Passing a negative number // as a numeric string $val2 = gmp_abs("-16497863358");   echo gmp_strval($val1); echo "\n"; echo gmp_strval($val2);   ?> |
Output:
16497863358 16497863358
Program 2:
<?php   // Passing a positive number // as a numeric string $val1 = gmp_abs("1897023411");   // Passing a negative number // as a numeric string $val2 = gmp_abs("-1897023411");   echo gmp_strval($val1); echo "\n"; echo gmp_strval($val2);   ?> |
Output:
1897023411 1897023411
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