Bug #74017 [Opn->Nab]: gmp_export() gives wrong result

Edit report at https://bugs.php.net/bug.php?id=74017&edit=1 ID: 74017 Updated by: nikic@php.net Reported by: zhuravlov dot ip at ya dot ru Summary: gmp_export() gives wrong result -Status: Open +Status: Not a bug Type: Bug Package: GNU MP related Operating System: Linux x86_64 PHP Version: 7.0.15 Block user comment: N Private report: N New Comment: The result is intentional. 0 returns "" instead of "\x00" in the same way that 255 returns "\xff" and not "\x00\xff". Additionally, returning an empty string is consistent with the behavior of mpz_export(), which is spec'd to yield a zero count for a zero op. Previous Comments: ------------------------------------------------------------------------ [2017-01-30 16:46:19] zhuravlov dot ip at ya dot ru Description: ------------ Distro: openSUSE Leap 42.1 (x86_64) Packages used: php7-7.0.15-35.2.x86_64 php7-gmp-7.0.15-35.2.x86_64 Standard (not changed) php.ini Description: The function gmp_export() gives wrong result for certain input: if the argument supplied is 0 or gmp_init(0) then gmp_export() outputs empty string. Test script: --------------- <?php echo gmp_export( 0 ); // will output '', must be "\x0" echo gmp_export(gmp_init(0)); // will output '', must be "\x0" ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74017&edit=1