Bug #60665 [NEW]: call to empty() on NULL result using PDO::FETCH_LAZY returns false

From: Operating system: Ubuntu Linux / Windows 7 PHP version: 5.3.8 Package: PDO related Bug Type: Bug Bug description:call to empty() on NULL result using PDO::FETCH_LAZY returns false Description: ------------ > PHP 5.3.8 (on both Ubuntu Linux and Windows 7) > ./configure --with-pdo-mysql > No changes to php.ini When fetching rows from a MySQL database using PDO with the default fetch method FETCH_LAZY, the empty() function returns false on NULL values in the database. This behavior does not exist when using other fetch methods (such as FETCH_OBJ or FETCH_ASSOC). Test script: --------------- $row = $stmt->fetch(PDO::FETCH_LAZY); echo $row->Address2."\n"; // RIGHT: outputs '' var_dump($row->Address2); // RIGHT: outputs 'NULL' var_dump(!$row->Address2); // RIGHT: outputs 'bool(true)' var_dump(!!$row->Address2); // RIGHT: outputs 'bool(false)' echo empty($row->Address2)."\n"; // WRONG: outputs '' var_dump(empty($row->Address2)); // WRONG: outputs 'bool(false)' var_dump(empty($row['Address2'])); // WRONG: outputs 'bool(false)' $var = $row['Address2']; var_dump($var); // RIGHT: outputs 'NULL' var_dump(empty($var)); // RIGHT: outputs 'bool(true)' Expected result: ---------------- NULL bool(true) bool(false) 1 bool(true) bool(true) NULL bool(true) Actual result: -------------- NULL bool(true) bool(false) bool(false) bool(false) NULL bool(true) -- Edit bug report at https://bugs.php.net/bug.php?id=60665&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=60665&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=60665&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=60665&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=60665&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=60665&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=60665&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=60665&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=60665&r=needscript Try newer version: https://bugs.php.net/fix.php?id=60665&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=60665&r=support Expected behavior: https://bugs.php.net/fix.php?id=60665&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=60665&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=60665&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=60665&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=60665&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=60665&r=dst IIS Stability: https://bugs.php.net/fix.php?id=60665&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=60665&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=60665&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=60665&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=60665&r=mysqlcfg