Req #44118 [Com]: [PATCH] MySQL: Set connection charset via php.ini option
Edit report at https://bugs.php.net/bug.php?id=44118&edit=1
ID: 44118
Comment by: shane dot bester at oracle dot com
Reported by: slava_reg at nsys dot by
Summary: [PATCH] MySQL: Set connection charset via php.ini
option
Status: Wont fix
Type: Feature/Change Request
Package: MySQL related
Operating System: any
PHP Version: 5.2.5
Assigned To: mysql
Block user comment: N
Private report: N
New Comment:
in my above case, i can connect only if i start server with --skip-character-set-
client-handshake option
Previous Comments:
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[2013-02-06 03:09:05] shane dot bester at oracle dot com
I compiled my server with default charset of utf32. Now I cannot connect at all,
therefore cannot execute any SET NAMES command. So, this needs fixing.
PHP Warning: mysqli_connect(): (HY000/1231): Variable 'character_set_client'
can't be set to the value of 'utf32' in X line Y
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[2011-10-18 12:58:41] andrey@php.net
mysqli has this. You can create a connection with mysqli_init() or just new mysql() and then call
mysqli_options() or $link->options and set the charset to be used. It will be negotiated during
the client-server handshake and there will be no additional query like SET NAMES. mysqli_options()
works before connections is established, later it has no effect.
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[2011-02-24 14:15:45] cavo at ynet dot sk
This is not about making application utf8 compatible. You can do this by "set names"
query. But it may be redundant. For example: All my database is in utf8 encoding. All my pages have
content-type utf8. All form posts from clients are in utf8. All strings I process in application are
utf8. But what do I need to do right after I connect to database? - "set names utf8;" Why?
Because if I don't, db will re-encode all strings to latin1. And PHP don't care. If I have
100 new connections to db per second, I need to 100 times run that query. Why if client and server
could negotiate encoding in those 2 obliged packets? ( http://bugs.php.net/bug.php?id=54086 ). It's ok
to set latin1 as default character set used by client to not affect existing applications (I believe
mostly for those, who actualy don't know, what are they doing..). But I think it's very
useful to have option to set encoding manualy via configuration option or in connect functions like:
mysql_connect('localhost', 'user', 'pwd', true,
MYSQL_CLIENT_ENCODING_UTF8);
Or am I somwhere wrong?
http://forge.mysql.com/wiki/MySQL_Internals_ClientServer_Protocol#Client_Authentication_Packet
http://dev.mysql.com/doc/refman/5.5/en/server-options.html#option_mysqld_default-character-set
http://dev.mysql.com/doc/refman/5.5/en/server-options.html#option_mysqld_character-set-client-handshake
http://bugs.php.net/bug.php?id=54086
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[2011-01-31 11:52:36] johannes@php.net
The application has to know the encoding being used, else some strange things might happen. We have
seen the trouble in having this globally configurable when Gentoo decided to use Utf-8 for their
MySQL installations by default instead of MySQL's default. I doubt you can make an application
Utf-8 comaptible by just setting such a low-level switch (it won't affect the HTTP Content-type
header or HTML forms, thus receiving data in a wrong encoding from the user, not re-encode it etc.)
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[2011-01-06 16:19:52] uw@php.net
Not sure if this is really needed. It can be done in user land. Its a bit of a convenience feature.
Not many votes for it... Andrey, Johannes...?
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