PDO MySQL constant documentation issues

[AndrolGenhald]

The PDO MySQL constant documentation is inconsistent with the actual constants defined.

PDO::MYSQL_ATTR_SERVER_PUBLIC_KEY exists but is not documented.

PDO::MYSQL_ATTR_LOCAL_INFILE_DIRECTORY and PDO::MYSQL_ATTR_INIT_COMMAND are documented as having type string but are actually ints.

PDO::MYSQL_ATTR_LOCAL_INFILE is documented to be available as of PHP 8.1.0, but it's available in earlier versions. Meanwhile, PDO::MYSQL_ATTR_LOCAL_INFILE_DIRECTORY has no version note, but it's not available until PHP 8.1.0. This seems like the version documentation got mixed up and put on the wrong constant.

[cmb69]

Right, thanks! Additional notes:

• MYSQL_ATTR_SERVER_PUBLIC_KEY is available, if build against libmysql-client ≥ 5.6.5 or mysqlnd
• MYSQL_ATTR_LOCAL_INFILE_DIRECTORY is indeed only available as of PHP 8.1.0
• MYSQL_ATTR_LOCAL_INFILE is available for all relevant versions (PHP 7.0.0+)