ORM （ object relation mapping ）
即将数据库表映射成对像，实现通过实例化对像来访问数据库
本文主要介绍Propel - smart, easy object persistence
$> pear channel-discover pear.phpdb.org $> pear install phpdb/propel_generator $> pear install phpdb/propel_runtime
Adding Channel
D:\>pear channel-discover pear.phpdb.org Adding Channel "pear.phpdb.org" succeeded Discovery of channel "pear.phpdb.org" succeeded
propel_generator 安装日志
D:\php-5.1.4-Win32>pear install phpdb/propel_generator phpdb/propel_generator requires package "channel://pear.phing.info/phing" (versi on >= 2.2.0) downloading creole-1.1.0.tgz ... Starting to download creole-1.1.0.tgz (92,633 bytes) .....................done: 92,633 bytes install ok: channel://pear.phpdb.org/creole-1.1.0
propel_runtime 安装日志
D:\php-5.1.4-Win32>pear install phpdb/propel_runtime downloading propel_runtime-1.2.0.tgz ... Starting to download propel_runtime-1.2.0.tgz (45,959 bytes) .............done: 45,959 bytes install ok: channel://pear.phpdb.org/propel_runtime-1.2.0 D:\php-5.1.4-Win32>
原文出处：Netkiller 系列 手札
本文作者：陈景峯
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