Bug #69476 [NEW]: is_null() must not throw warnings

From: spam2 at rhsoft dot net Operating system: Linux PHP version: Irrelevant Package: PHP Language Specification Bug Type: Bug Bug description:is_null() must not throw warnings Description: ------------ since isset() returns false in case a variable contains NULL (which is a major design error) is_null() MUST not throw a warning in case of a undefined variable Test script: --------------- <?php if(isset($nicht_definiert) || is_null($nicht_definiert)) { echo "defined\n"; } ?> Expected result: ---------------- no warning or a sane isset() behavior with sanity in mind how the hell do you test if a variable is defined with the isset() behavior saying no if the value is NULL Actual result: -------------- Notice: Undefined variable: nicht_definiert in /mnt/data/downloads/test.php on line 2 defined -- Edit bug report at https://bugs.php.net/bug.php?id=69476&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69476&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69476&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69476&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69476&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69476&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69476&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69476&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69476&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69476&r=support Expected behavior: https://bugs.php.net/fix.php?id=69476&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69476&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69476&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69476&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69476&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69476&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69476&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69476&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69476&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69476&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69476&r=mysqlcfg