Bug #73474 [NEW]: Fatal error: PDO::__construct(): out of memory

From: hetao at hetao dot name Operating system: Ubuntu 14.04 x86_64 PHP version: 5.6.27 Package: MySQL related Bug Type: Bug Bug description:Fatal error: PDO::__construct(): out of memory Description: ------------ When the passowrd is string("") and set ATTR_PERSISTENT is true, the PDO __construct where Fatal Error (You keep press the F5 in the browser , U will see the error some times) If password is not empty or is null , it's ok. $dsn = 'mysql:dbname=test;host=localhost;port=3306'; $user = 'root'; $password = "";//will wrong //$password = null; //will ok try { $dbh = new PDO($dsn, $user, $password, array( \PDO::ATTR_PERSISTENT => true ) ); } catch (PDOException $e) { echo 'Connection failed: ' . $e->getMessage(); } Test script: --------------- <?php /* Connect to an ODBC database using driver invocation */ $dsn = 'mysql:dbname=test;host=localhost;port=3306'; $user = 'root'; $password = ""; $dbh = new PDO($dsn, $user, $password, array( \PDO::ATTR_PERSISTENT => true ) ); print_r($dbh); -- Edit bug report at https://bugs.php.net/bug.php?id=73474&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73474&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73474&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73474&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73474&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73474&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73474&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73474&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73474&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73474&r=support Expected behavior: https://bugs.php.net/fix.php?id=73474&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73474&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73474&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73474&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73474&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73474&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73474&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73474&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73474&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73474&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73474&r=mysqlcfg