gmp_sqrtrem
I think it's no longer necessary to worry about trailing nulls. This was fixed in Feb 2002 (see bug 10133)
gmp_strval
(PHP 4 >= 4.0.4, PHP 5)
gmp_strval — Convierte un número GMP a una cadena de texto
Descripción
string gmp_strval
( resource $numero_gmp
[, int $base
] )
Convierte un número GMP a su representación en la base base y en forma de cadena de texto. El valor por defecto de la base es 10. Los valores permitidos en la base son los que se encuentren entre 2 y 36.
Example #1 Conversión de un número GMP a una cadena de texto
<?php
$a = gmp_init("0x41682179fbf5");
printf("Decimal: %s, base-36: %s", gmp_strval($a), gmp_strval($a,36));
?>
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User Contributed Notesgmp_strval
php at richardneill dot org
20-Sep-2006 01:47
20-Sep-2006 01:47
caldwell at utm dot NoSpamPlease dot edu
22-Jul-2001 05:17
22-Jul-2001 05:17
Warning: gmp_strval may return a null terminated string (e.g., gmp_strval(gmp_init(8)) has two characters. This is because gmp is built for speed, so uses estimates based on things it can get quickly, like the number of bits in N. So since 8 is a 4 bit number, it will be allocated ceil(log10(2^4))=ceil(4*0.30103....) = 2 characters. The gmp folks feel it is the caller's responsibility (in this case the PHP interface) to check whether or not all the characters were required. PHP might have done this for us (and may in the future), but for now, you need to check (if it matters to you--it sure did in my program!).