From: timo dot hummel at 4fb dot de Operating system: any PHP version: 5.0.5 PHP Bug Type: Strings related Bug description: Design Discussion: setlocale and type juggling
Description: ------------ Currently, the whole way PHP does type juggling is affected using setlocale. Right now, PHP respects the setlocale-Settings for LC_NUMERIC when doing type-juggling (e.g. converting a float to a string or when outputting data): $float = 0.12; setlocale(LC_ALL, "de_DE"); echo $float; The simple example above outputs 0,12. If you need to build up SQL queries, this behaviour is unwanted and causes errors: $float = 0.12; setlocale(LC_ALL, "de_DE"); $sql = "SELECT * FROM test WHERE value=$float;"; The query will be "juggled" to SELECT * FROM test WHERE value=0,12; - which is not the expected result. If setlocale is used, there's no way (at least not to my knowledge) to access the original, english (I also call it technical) representation of a floating point number. This is not really a bug, but rather a limitation by design, but it effectively prevents PHP developers from implementing multi-lingual applications. Reproduce code: --------------- <?php /* Nicer output for browsers */ echo "<pre>"; /* Predefine some variables to play around with */ $float = 0.12; $sql = "SELECT * FROM test WHERE amount="; setlocale(LC_ALL, "C"); // Set standard locale echo strval($float). "\n"; // Outputs 0.12, which is OK echo $sql . $float."\n"; // Outputs SELECT * FROM test WHERE amount=0.12, which can be used by a database. setlocale(LC_ALL, "de_DE"); // Set german locale echo strval($float). "\n"; // Outputs 0,12, which is OK for display purposes, but not for data processing echo $sql . $float."\n"; // Outputs SELECT * FROM test WHERE amount=0,12, which cannot be used by a database with english locale. echo "</pre>"; ?> -- Edit bug report at http://bugs.php.net/?id=35215&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=35215&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=35215&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=35215&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=35215&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=35215&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=35215&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=35215&r=needscript Try newer version: http://bugs.php.net/fix.php?id=35215&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=35215&r=support Expected behavior: http://bugs.php.net/fix.php?id=35215&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=35215&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=35215&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=35215&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35215&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=35215&r=dst IIS Stability: http://bugs.php.net/fix.php?id=35215&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=35215&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=35215&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=35215&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=35215&r=mysqlcfg
