Edit report at http://bugs.php.net/bug.php?id=52053&edit=1
ID: 52053
Updated by: fel...@php.net
Reported by: zabruska at tugamail dot pt
Summary: PDO constructor returns null instead of throwing an
exception
-Status: Open
+Status: Closed
Type: Bug
Package: PDO related
Operating System: Ubuntu 9.10
PHP Version: 5.3.2
-Assigned To:
+Assigned To: felipe
New Comment:
This bug has been fixed in SVN.
Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
Thank you for the report, and for helping us make PHP better.
Closing the Bug #49320 as well.
Previous Comments:
------------------------------------------------------------------------
[2010-06-11 19:36:35] zabruska at tugamail dot pt
Description:
------------
Calling 'new PDO(...)' returns null instead of raising an exception.
This behaviour was found, while trying to create a PDO object using an
sqlite database.
The database was created using the command 'sqlite3' from the console.
Attempting to open it from PHP using an 'sqlite2' dsn did not raised any
exception, but returned null from the object constructor.
I do not know if this happens with other PDO drivers, but in any case
constructors SHOULD throw an Exception on error, and not NULL.
A similar bug has been reported (http://bugs.php.net/bug.php?id=49320)
but since there is at least another case
(http://bugs.php.net/bug.php?id=52042) in which a constructor returns
NULL when it should be throwing an Exception, I decided to report this
anyway.
I'm not sure if this goes beyond PDO, and it's a PHP feature that I've
never experienced before, but this type of code makes no sense at all,
$o = new SomeObject();
if($o === null) {
// handle error ...
} else {
$o->doSomething();
}
This is what is expected from OOP:
try {
$o = new SomeObject();
$o->doSomething();
} catch(Exception $x) {
// handle error ...
}
Test script:
---------------
>From the console:
$ sqlite3 sqlite.db
sqlite> CREATE TABLE T(K VARCHAR(32));
sqlite> .q
>From a PHP script:
$pdo = new PDO('sqlite2:sqlite.db');
echo 'PDO is ', gettype($pdo), PHP_EOL;
Expected result:
----------------
PDO is object
Actual result:
--------------
PDO is NULL
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=52053&edit=1
