Doc #64877 [NEW]: is_numeric() doesn't treat strings in binary notation as documented

From: cmbecker69 at gmx dot de Operating system: any PHP version: 5.4.15 Package: Documentation problem Bug Type: Documentation Problem Bug description:is_numeric() doesn't treat strings in binary notation as documented Description: ------------ In PHP 5.4.15 the definition of is_numeric() is in ext/standard/type.c (line 300ff)[1]. The relevant function to do the check for arguments of type string is is_numeric_string_ex() in Zend/zend_operators.h (line 109ff)[2]. Apparently special support for strings in binary as well as octal notation is missing; only strings in decimal and hexadecimal notation are recognized as such (strings in octal notation are treated as being decimal). I have filed this issue as documentation problem, but it might be considered an implementation bug. [1] <http://lxr.php.net/xref/PHP_5_4/ext/standard/type.c> [2] <http://lxr.php.net/xref/PHP_5_4/Zend/zend_operators.h> Test script: --------------- var_dump(is_numeric('0b1')); Expected result: ---------------- bool(true) Actual result: -------------- bool(false) -- Edit bug report at https://bugs.php.net/bug.php?id=64877&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=64877&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=64877&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=64877&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=64877&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=64877&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=64877&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=64877&r=needscript Try newer version: https://bugs.php.net/fix.php?id=64877&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=64877&r=support Expected behavior: https://bugs.php.net/fix.php?id=64877&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=64877&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=64877&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=64877&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64877&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=64877&r=dst IIS Stability: https://bugs.php.net/fix.php?id=64877&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=64877&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=64877&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=64877&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=64877&r=mysqlcfg