Bug #65212 [Opn->Nab]: problem if pass in numeric string containing a float between 0 and 1

Edit report at https://bugs.php.net/bug.php?id=65212&edit=1 ID: 65212 Updated by: cmb@php.net Reported by: iam4webwork at hotmail dot com Summary: problem if pass in numeric string containing a float between 0 and 1 -Status: Open +Status: Not a bug Type: Bug Package: Math related Operating System: Irrelevant PHP Version: Irrelevant -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: That behaves as documented[1]: | Any invalid characters in number are silently ignored. As of PHP | 7.4.0 supplying any invalid characters is deprecated. [1] <https://www.php.net/manual/en/function.base-convert.php#refsect1-function.base-convert-parameters> Previous Comments: ------------------------------------------------------------------------ [2013-07-06 17:42:13] iam4webwork at hotmail dot com _php_math_basetozval appears to be source of problem b/c while it mimics strtol, unlike strtol it fails to adequately deal with '.' being an illegal character. strtol disregards '.' and all subsequent input whereas _php_math_basetozval just skips the '.' and processes the next character. ------------------------------------------------------------------------ [2013-07-06 08:59:10] iam4webwork at hotmail dot com Description: ------------ If you pass to base_convert a numeric string like "0.5", to have it converted from base 10 to base 16, PHP will interpret the input as decimal 5 and return hexadecimal 5. I suspect that the problem lies internally in the logic of _php_math_basetozval. Test script: --------------- var_dump(base_convert("0.5",10,16)); Expected result: ---------------- I expected PHP to return a zero just as printf("%x","0.5") and dexhex() do. Actual result: -------------- 5 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65212&edit=1