- with mysqlnd, constant always present
- with mysqli, check client library version
- without mysqlnd and without mysqli
skip the test if no connection
use connection to check client library
Note : MySQLPDOTest::getClientVersion() is broken with mysqlnd
as PDO::ATTR_CLIENT_VERSION return "mysqlnd 5.0.11-dev - 20120503..."
so, getClientVersion() return "11"
There is a constant now which only is there when mysqli with
mysqlnd and pdo_mysql was compiled at the same time, or when
libmysql version > 50605. So checking for that dynamically,
will fail only if there is no mysqli and no connection.
pecl#12794, pecl#12401
# Running the tests:
# (Note: Doesn't work currnetly on HEAD, see:
# http://news.php.net/php.qa/64378)
#
# PDO_MYSQL_TEST_DSN - DSN
# For example: mysql:dbname=test;host=localhost;port=3306
#
# PDO_MYSQL_TEST_HOST - database host
# PDO_MYSQL_TEST_DB - database (schema) name
# PDO_MYSQL_TEST_SOCKET - database server socket
# PDO_MYSQL_TEST_ENGINE - storage engine to use
# PDO_MYSQL_TEST_USER - database user
# PDO_MYSQL_TEST_PASS - database user password
# PDO_MYSQL_TEST_CHARSET - database charset
#
# NOTE: if any of PDO_MYSQL_TEST_[HOST|DB|SOCKET|ENGINE|CHARSET] is
# part of PDO_MYSQL_TEST_DSN, the values must match. That is, for example,
# for PDO_MYSQL_TEST_DSN = mysql:dbname=test you MUST set PDO_MYSQL_TEST_DB=test.
