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authorOleg Pudeyev <oleg@bsdpower.com>2012-12-13 19:07:49 -0500
committerOleg Pudeyev <oleg@bsdpower.com>2012-12-13 19:15:24 -0500
commit9e3fd3bf8e8ff08b159d9151aef6f9bb6b9244ee (patch)
treeac564d54f2d397abe53ae46f22906677ddeda1a5 /phpBB/includes/functions.php
parent1a1ae1b663079792c775c4a51d5aaaf0259fb05c (diff)
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[ticket/11015] Fix 3.0 to 3.1 dbms conversion for mysqli.
PHPBB3-11015
Diffstat (limited to 'phpBB/includes/functions.php')
-rw-r--r--phpBB/includes/functions.php26
1 files changed, 21 insertions, 5 deletions
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 4bf991ca9e..5c08d457b6 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -5550,23 +5550,39 @@ function phpbb_to_numeric($input)
}
/**
-* Convert 3.0 dbms to 3.1 db driver class name
+* Convert either 3.0 dbms or 3.1 db driver class name to 3.1 db driver class name.
+*
+* If $dbms is a valid 3.1 db driver class name, returns it unchanged.
+* Otherwise prepends phpbb_db_driver_ to the dbms to convert a 3.0 dbms
+* to 3.1 db driver class name.
*
* @param string $dbms dbms parameter
* @return db driver class
*/
function phpbb_convert_30_dbms_to_31($dbms)
{
- if (class_exists($dbms))
+ // Note: this check is done first because mysqli extension
+ // supplies a mysqli class, and class_exists($dbms) would return
+ // true for mysqli class.
+ // However, per the docblock any valid 3.1 driver name should be
+ // recognized by this function, and have priority over 3.0 dbms.
+ if (class_exists('phpbb_db_driver_' . $dbms))
{
- return $dbms;
+ return 'phpbb_db_driver_' . $dbms;
}
- if (class_exists('phpbb_db_driver_' . $dbms))
+ if (class_exists($dbms))
{
- return 'phpbb_db_driver_' . $dbms;
+ return $dbms;
}
+ // Additionally we could check that $dbms extends phpbb_db_driver.
+ // http://php.net/manual/en/class.reflectionclass.php
+ // Beware of possible performance issues:
+ // http://stackoverflow.com/questions/294582/php-5-reflection-api-performance
+ // We could check for interface implementation in all paths or
+ // only when we do not prepend phpbb_db_driver_.
+
throw new \RuntimeException("You have specified an invalid dbms driver: $dbms");
}