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Bug #73474 Fatal error: PDO::__construct(): out of memory
Submitted: 2016-11-07 12:08 UTC Modified: 2017-10-24 08:31 UTC
Avg. Score:4.2 ± 0.8
Reproduced:4 of 4 (100.0%)
Same Version:1 (25.0%)
Same OS:2 (50.0%)
From: hetao at hetao dot name Assigned:
Status: Open Package: PDO related
PHP Version: PHP Version OS: Ubuntu 14.04 x86_64
Private report: No CVE-ID: None
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From: hetao at hetao dot name
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 [2016-11-07 12:08 UTC] hetao at hetao dot name
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,
            \PDO::ATTR_PERSISTENT => true
} catch (PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();

Test script:
/* 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,
        \PDO::ATTR_PERSISTENT => true


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 [2016-11-07 14:23 UTC]
-Package: MySQL related +Package: PDO MySQL
 [2016-11-08 16:25 UTC]
-Package: PDO MySQL +Package: PDO Core
 [2016-11-08 16:25 UTC]
Changing package from PDO MySQL to PDO Code, since there are examples for multiple drivers.
 [2016-11-11 08:21 UTC] hetao at hetao dot name
-PHP Version: 5.6.27 +PHP Version: PHP Version
 [2016-11-11 08:21 UTC] hetao at hetao dot name
I compile the lastest php7,php5 src from the, and the bug not exits.
May be the  PHP Version problem?
 [2017-10-24 08:31 UTC]
-Package: PDO Core +Package: PDO related
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