Convert GMP number to integer gmp_init gmp_invert GMP Functions PHP Manual gmp_intval (PHP 4 >= 4.0.4, PHP 5)gmp_intval — Convert GMP number to integer Description int gmp_intval ( resource $gmpnumber ) This function allows to convert GMP number to integer. Parameters gmpnumber A GMP number. Return Values An integer value of gmpnumber . Examples Example #1 gmp_intval() example <?php// displays correct resultecho gmp_intval("2147483647") . "\n";// displays wrong result, above PHP integer limitecho gmp_intval("2147483648") . "\n";// displays correct resultecho gmp_strval("2147483648") . "\n";?> The above example will output: 2147483647 2147483647 2147483648 Notes Warning This function returns a useful result only if the number actually fits the PHP integer (i.e., signed long type). If you want just to print the GMP number, use gmp_strval(). gmp_init gmp_invert GMP Functions PHP Manual