如何通过PHP实现获取并生成数据库字典？
本文实例讲述了PHP实现获取并生成数据库字典的方法。分享给大家供大家参考，具体如下：
<?php
/**
* 生成mysql数据字典
*/
header("Content-type:text/html;charset=utf-8");
// 配置数据库
$database = array();
$database['DB_HOST'] = 'localhost';
$database['DB_NAME'] = 'test';
$database['DB_USER'] = 'root';
$database['DB_PWD'] = '';
$mysql_conn = @mysql_connect("{$database['DB_HOST']}", "{$database['DB_USER']}", "{$database['DB_PWD']}") or die("Mysql connect is error.");
mysql_select_db($database['DB_NAME'], $mysql_conn);
$result = mysql_query('show tables', $mysql_conn);
mysql_query("set names utf8");
// 取得所有表名
while ($row = mysql_fetch_array($result))
{
$tables[]['TABLE_NAME'] = $row[0];
}
// 循环取得所有表的备注及表中列消息
foreach($tables as $k => $v)
{
$sql = 'SELECT * FROM ';
$sql .= 'information_schema.TABLES ';
$sql .= 'WHERE ';
$sql .= "table_name = '{$v['TABLE_NAME']}' AND table_schema = '{$database['DB_NAME']}'";
$table_result = mysql_query($sql, $mysql_conn);
while ($t = mysql_fetch_array($table_result))
{
$tables[$k]['TABLE_COMMENT'] = $t['TABLE_COMMENT'];
}
$sql = 'SELECT * FROM ';
$sql .= 'information_schema.COLUMNS ';
$sql .= 'WHERE ';
$sql .= "table_name = '{$v['TABLE_NAME']}' AND table_schema = '{$database['DB_NAME']}'";
$fields = array();
$field_result = mysql_query($sql, $mysql_conn);
while ($t = mysql_fetch_array($field_result))
{
$fields[] = $t;
}
$tables[$k]['COLUMN'] = $fields;
}
mysql_close($mysql_conn);
$html = '';
// 循环所有表
//print_r($tables);
foreach($tables as $k => $v)
{
$html .= '<table border="1" cellspacing="0" cellpadding="0" align="center">';
$html .= '<caption>表名：' . $v['TABLE_NAME'] . ' ' . $v['TABLE_COMMENT'] . '</caption>';
$html .= '<tbody><tr><th>字段名</th><th>数据类型</th><th>默认值</th><th>允许非空</th><th>自动递增</th><th>备注</th></tr>';
$html .= '';
foreach($v['COLUMN'] AS $f)
{
$html .= '<td class="c1">' . $f['COLUMN_NAME'] . '</td>';
$html .= '<td class="c2">' . $f['COLUMN_TYPE'] . '</td>';
$html .= '<td class="c3">' . $f['COLUMN_DEFAULT'] . '</td>';
$html .= '<td class="c4">' . $f['IS_NULLABLE'] . '</td>';
$html .= '<td class="c5">' . ($f['EXTRA'] == 'auto_increment'?'是':' ') . '</td>';
$html .= '<td class="c6">' . $f['COLUMN_COMMENT'] . '</td>';
$html .= '</tr>';
}
$html .= '</tbody></table></p>';
}
/* 生成word */
//header ( "Content-type:application/vnd.ms-word" );
//header ( "Content-Disposition:attachment;filename={$database['DB_NAME']}数据字典.doc" );
/* 生成excel*/
//header ( "Content-type:application/vnd.ms-excel" );
//header ( "Content-Disposition:attachment;filename={$database['DB_NAME']}数据字典.xls" );
// 输出
echo '<html>
<meta charset="utf-8">
<title>自动生成数据字典</title>
<style>
body,td,th {font-family:"宋体"; font-size:12px;}
table,h1,p{width:960px;margin:0px auto;}
table{border-collapse:collapse;border:1px solid #CCC;background:#efefef;}
table caption{text-align:left; background-color:#fff; line-height:2em; font-size:14px; font-weight:bold; }
table th{text-align:left; font-weight:bold;height:26px; line-height:26px; font-size:12px; border:1px solid #CCC;padding-left:5px;}
table td{height:20px; font-size:12px; border:1px solid #CCC;background-color:#fff;padding-left:5px;}
.c1{ width: 150px;}
.c2{ width: 150px;}
.c3{ width: 80px;}
.c4{ width: 100px;}
.c5{ width: 100px;}
.c6{ width: 300px;}
</style>
<body>';
echo '<h1 style="text-align:center;">'.$database['DB_NAME'].'数据字典</h1>';
echo '<p style="text-align:center;margin:20px auto;">生成时间：' . date('Y-m-d H:i:s') . '</p>';
echo $html;
echo '<p style="text-align:left;margin:20px auto;">总共：' . count($tables) . '个数据表</p>';
echo '</body></html>';
?>
希望本文所述对大家PHP程序设计有所帮助。
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