php根据数据表结构自动生成类属性，具体代码如下：
<?php
$table = $_GET['table'];
$rs = $db->queryAll("SELECT column_name,column_type,column_comment,data_type
FROM information_schema.`COLUMNS` WHERE `TABLE_NAME` LIKE '$table'");
$output = '';
foreach ($rs as $r) {
// 下划线转驼峰
$r['column_name'] = lcfirst(implode('', array_map('ucfirst', explode('_', $r['column_name']))));
$output .=<<<EOF
\n
/**
* {$r['column_comment']}
* @var {$r['data_type']}
*/
public \${$r['column_name']}; \n
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