From: martin at bangaroo dot net
Operating system: Gentoo Linux
PHP version: 5.2.1
PHP Bug Type: PDO related
Bug description: Executing prepared statement changes type of bound parameters
to string
Description:
------------
Executing a prepared statement changes the type of bound parameters
to string (Tested only with pgsql driver).
This bite me when I wanted to execute an insert statement only when
the double value to be inserted actually changed, NULL being a
possible value. Unfortunatly, comparing the new value with the old
value with the !== operator didn't work, because the type-change
made the test always evaluate to TRUE.
Reproduce code:
---------------
<?php
$db = new PDO("pgsql:host=localhost dbname=test user=dummy");
$db->query("CREATE TABLE test_table ( val REAL )");
$qry = $db->prepare("INSERT INTO test_table VALUES (:val)");
$qry->bindParam(":val",$bound_val);
$bound_val = 5.2;
echo "Type before execute(): ".gettype($bound_val)."\n";
$qry->execute();
echo "Type after execute(): ".gettype($bound_val)."\n";
$db->query("DROP TABLE test");
?>
Expected result:
----------------
Type before execute(): double
Type after execute(): double
Actual result:
--------------
Type before execute(): double
Type after execute(): string
--
Edit bug report at http://bugs.php.net/?id=41027&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=41027&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=41027&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=41027&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=41027&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=41027&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=41027&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=41027&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=41027&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=41027&r=support
Expected behavior: http://bugs.php.net/fix.php?id=41027&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=41027&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=41027&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=41027&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=41027&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=41027&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=41027&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=41027&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=41027&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=41027&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=41027&r=mysqlcfg
