如何知道 MySQLnd 是否是活动驱动程序?
也许这是一个显而易见的问题,但我想确定一下。
我如何知道 MySQLnd 是否是活动驱动程序?
我正在运行 PHP 5.3 和 MySQL 5.1.37。 在 phpinfo() 中列出了 mysqlnd,但仅此而已,我无法确定我是否使用 MySQLnd 还是旧驱动程序...
phpinfo() 输出摘录
mysql
MySQL Support enabled
Active Persistent Links 0
Active Links 0
Client API version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
mysqli
MysqlI Support enabled
Client API library version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
Active Persistent Links 0
Inactive Persistent Links 0
Active Links 26
mysqlnd
mysqlnd enabled
Version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
PDO
PDO support enabled
PDO drivers mysql
pdo_mysql
PDO Driver for MySQL enabled
Client API version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
我正在使用 PDO,PDO 驱动程序说 mysql...
Maybe it's an obvious question, but I want to be sure.
How can i know if it MySQLnd is the active driver?
I'm runing PHP 5.3 and MySQL 5.1.37.
In phpinfo() mysqlnd is listed but only with this I can't be sure if I'm using MySQLnd or the old driver...
Extract of phpinfo() output
mysql
MySQL Support enabled
Active Persistent Links 0
Active Links 0
Client API version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
mysqli
MysqlI Support enabled
Client API library version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
Active Persistent Links 0
Inactive Persistent Links 0
Active Links 26
mysqlnd
mysqlnd enabled
Version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
PDO
PDO support enabled
PDO drivers mysql
pdo_mysql
PDO Driver for MySQL enabled
Client API version mysqlnd 5.0.5-dev - 081106 - $Revision: 1.3.2.27 $
I'm using PDO, and PDO driver says mysql...
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如果您通过
mysqli
访问,这应该可以解决问题:检测其是否是活动的
PDO
驱动程序,然后创建 MySQL PDO 对象:If you are accessing via
mysqli
, this should do the trick:To detect if its the active
PDO
driver, create your MySQL PDO object then:检查 mysqli_fetch_all 并不能真正描述您是否正在使用 mysqlnd 。相反,它表示您已启用 mysqli 扩展。
MySQLi 只是 PHP 早期版本中提供的
mysql
扩展的更新版本。此代码:
不回显任何内容表明您没有编译/启用/安装 mysqli,并且可能正在使用旧的 mysql 扩展。
使用 mysqlnd 检查 mysqli 与使用 libmysqlclient 的 mysql 的更好方法是这样做:
这有效,因为 mysqlnd 提供了三个附加函数,仅当 mysqlnd 用作驱动程序时才起作用。
最后,PDO 检查需要首先定义
$pdo
变量。Checking for
mysqli_fetch_all
does not really describe wether you are usingmysqlnd
. Rather, it says that you have the mysqli extension enabled.MySQLi is simply an updated version of the
mysql
extension that was provided in earlier versions of PHP.This code:
not echoing nothing suggests that you don't have mysqli compiled/enabled/installed, and might be using the older
mysql
extension.A better way to check for mysqli with mysqlnd vs mysql with libmysqlclient is to do this:
This works because mysqlnd provides three additional functions that work only when mysqlnd is used as the driver.
Finally, the PDO check needs to have the
$pdo
variable defined first.驱动程序(libmysql 或 mysqlnd)是在编译时选择的,并且可以为 mysql、mysqli 和 pdo_mysql 独立指定这两个驱动程序中的每一个。
以下是与 mysqlnd 对应的三个配置选项:
在您的情况下,mysql、mysqli 和 pdo_mysql 的“客户端 API 版本”均为“mysqlnd 5.0.5-dev”。
所以看来你在这三种情况下都使用 mysqlnd 。
对于 PDO,您已经安装了 MySQL 驱动程序——并且该驱动程序是基于 mysqlnd 编译的。
The driver (libmysql or mysqlnd) is choosen at compile-time, and each one of those two can be specified independatly for mysql, mysqli, and pdo_mysql.
Here are the three configure options that correspond to mysqlnd :
In your case, the "Client API version" is "mysqlnd 5.0.5-dev" for both mysql, mysqli, and pdo_mysql.
So it seems you ahre using mysqlnd in either three cases.
In the case of PDO, you have the MySQL driver installed -- and that one is compiled based on mysqlnd.
这就是我一直在寻找的
This is what I was looking for
也许检查这些设置是否存在?由于某种原因,phpinfo() 呈现它们的方式与其他 ini 设置不同。适用于 5.4,不确定 5.3 是否适用。
Maybe check if these settings exist? phpinfo() renders them differently from other ini settings for some reason. Works for 5.4, not sure about 5.3.
phpinfo() 在开头列出了用于编译 PHP 的“配置命令”。
正如他们在其他答案中所述,mysqlnd 是 php 安装/编译过程中 2 个选择中的 1 个(默认值)。
我的 7.0.33 的 phpinfo 配置命令是:
'./configure' '--prefix=/opt/php70' '--with-libdir=lib64' '--enable-bcmath' '--enable-calendar' '- -enable-dbase' '--enable-exif' '--enable-ftp' '--enable-gd-native-ttf' '--enable-intl' '--enable-libxml' '--enable-mbstring ' '--enable-pdo' '--enable-soap' '--enable-sockets' '--enable-sqlite-utf8' '--enable-wddx' '--enable-zip' '--with- bz2' '--with-curl' '--with-freetype-dir' '--with-gd' '--with-gettext' '--with-gmp' '--with-imap' '--with -imap-ssl''--with-jpeg-dir=/usr''--with-kerberos''--with-mcrypt''--with-mhash''--with-mssql''--with- mysql=/usr' '--with-mysql-sock=/var/lib/mysql/mysql.sock' '--with-mysqli=/usr/bin/mysql_config' '--with-openssl' '--with -pdo-mysql=/usr' '--with-pdo-pgsql=/usr' '--with-pgsql=/usr' '--with-pdo-sqlite' '--with-png-dir' '- -with-pspell''--with-sqlite''--with-system-tzdata''--with-tidy''--with-unixODBC''--with-xmlrpc''--with-xsl'' --with-zlib'
注意 --with-mysqli=/usr/bin/mysql_config' '
和 --enable-mysqlnd' ' (不是这个,而是 5.6 php 版本上的读数)
--with-mysqli= 是指向一个目录,意味着它正在使用 libmysqlclient
如果是 mysqlnd,那么它正在使用本机驱动程序。
有关此的更多信息 http://php.net/manual/en/mysqlinfo .library.choosing.php
(我知道这已经很老了,但是这些知识可以帮助我节省几个小时的技术支持辩论时间,而且我是第一次看到这个。)
phpinfo() in the beginning lists the "Configure Command" used to compile PHP.
As they state in other answers mysqlnd is 1 (the default) of 2 choices during the php install/compile process.
My phpinfo Configure Command for 7.0.33 is:
'./configure' '--prefix=/opt/php70' '--with-libdir=lib64' '--enable-bcmath' '--enable-calendar' '--enable-dbase' '--enable-exif' '--enable-ftp' '--enable-gd-native-ttf' '--enable-intl' '--enable-libxml' '--enable-mbstring' '--enable-pdo' '--enable-soap' '--enable-sockets' '--enable-sqlite-utf8' '--enable-wddx' '--enable-zip' '--with-bz2' '--with-curl' '--with-freetype-dir' '--with-gd' '--with-gettext' '--with-gmp' '--with-imap' '--with-imap-ssl' '--with-jpeg-dir=/usr' '--with-kerberos' '--with-mcrypt' '--with-mhash' '--with-mssql' '--with-mysql=/usr' '--with-mysql-sock=/var/lib/mysql/mysql.sock' '--with-mysqli=/usr/bin/mysql_config' '--with-openssl' '--with-pdo-mysql=/usr' '--with-pdo-pgsql=/usr' '--with-pgsql=/usr' '--with-pdo-sqlite' '--with-png-dir' '--with-pspell' '--with-sqlite' '--with-system-tzdata' '--with-tidy' '--with-unixODBC' '--with-xmlrpc' '--with-xsl' '--with-zlib'
Note --with-mysqli=/usr/bin/mysql_config' '
and --enable-mysqlnd' ' (Not in this one but a readout on a 5.6 php build)
--with-mysqli= is pointing to a directory meaning it is using libmysqlclient
If it was mysqlnd instead then it is using the native driver.
For more info on this http://php.net/manual/en/mysqlinfo.library.choosing.php
(I know this is way old however this knowledge would have saved me hours of tech support debate and I seen this first.)