Doctrine2压缩包的tools目录用来做一些命令行工作。这里主要说一下通过tools，把数据库的表结构自动生成yml/xml/entities，原因是写那些东西太浪费时间了有木有。
1.通过Doctrine 的orm:convert-mapping命令生成xml/yml
Usage:
orm:convert-mapping [options] [--] <to-type> <dest-path>
orm:convert:mapping
Arguments:
to-type The mapping type to be converted.
dest-path The path to generate your entities classes.
Options:
--filter=FILTER A string pattern used to match entities that should be processed. (multiple values allowed)
--force Force to overwrite existing mapping files.
--from-database Whether or not to convert mapping information from existing database.
--extend[=EXTEND] Defines a base class to be extended by generated entity classes.
--num-spaces[=NUM-SPACES] Defines the number of indentation spaces [default: 4]
--namespace[=NAMESPACE] Defines a namespace for the generated entity classes, if converted from database.
-h, --help Display this help message
-q, --quiet Do not output any message
-V, --version Display this application version
--ansi Force ANSI output
--no-ansi Disable ANSI output
-n, --no-interaction Do not ask any interactive question
-v|vv|vvv, --verbose Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug
Help:
Convert mapping information between supported formats.
This is an execute one-time command. It should not be necessary for
you to call this method multiple times, especially when using the --from-database
flag.
Converting an existing database schema into mapping files only solves about 70-80%
of the necessary mapping information. Additionally the detection from an existing
database cannot detect inverse associations, inheritance types,
entities with foreign keys as primary keys and many of the
semantical operations on associations such as cascade.
Hint: There is no need to convert YAML or XML mapping files to annotations
every time you make changes. All mapping drivers are first class citizens
in Doctrine 2 and can be used as runtime mapping for the ORM.
Hint: If you have a database with tables that should not be managed
by the ORM, you can use a DBAL functionality to filter the tables and sequences down
on a global level:
$config->setFilterSchemaAssetsExpression($regexp);</dest-path></to-type>上面是help,下面来一个实例
/var/www/doctrine$ php vendor/bin/doctrine orm:convert-mapping xml config/xml/ --from-database
这里linux上执行的命令,先cd到/var/www/doctrine下面（有的菜鸟问了，cd是个什么东东，为毛是这个目录~~cd是什么呢，拜拜，这种问题百度去。为什么是这个目录呢，这是项目文件夹，总之这下面就有doctrine的包了）。前面命令省略解释，解释后面的“xml”意思是生成的文件类型，“config/xml/”是xml存放目录 ，--from-database的意思是从数据库生成。
2.生成yml了，然后就要生成entities了
/var/www/doctrine$ php vendor/bin/doctrine orm:generate-entities src/ --regenerate-entities
这个简单，我的entities放在/var/www/doctrine/src下面，纯粹测试用，后期架构会变化的
要先生成yml再生成entities，无法直接生成entities，反正我没成功，可能操作问题？
PHP ORM这个文章太少了，因为这个不常用，说白了PHP ORM卵用不大，纯粹方便
以上就介绍了Doctrine248 命令行工具生成yml/xml/entities，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。
