php 生成mysql数据字典代码

2023-01-06 20:08:39
由于项目开发用了比较多的表，为了快速获取数据字典，通过php代码的方式来获取表结构和表注释。代码如下：
<?php

/**

 * 生成mysql数据字典

 */

header ( "Content-type: text/html; charset=utf-8" );

// 配置数据库

$dbserver = "localhost";

$dbusername = "数据库用户名";

$dbpassword = "数据库密码";

$database = "数据库名称";

// 其他配置

$title = '数据字典';

$mysql_conn = @mysql_connect ( "$dbserver", "$dbusername", "$dbpassword" ) or die ( "Mysql connect is error." );

mysql_select_db ( $database, $mysql_conn );

mysql_query ( 'SET NAMES utf8', $mysql_conn );

$table_result = mysql_query ( 'show tables', $mysql_conn );

// 取得所有的表名

while ( $row = mysql_fetch_array ( $table_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}'";

    $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}'";

    $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

foreach ( $tables as $k => $v ) {

    // $html .= '<p><h2>'. $v['TABLE_COMMENT'] . '&nbsp;</h2>';

    $html .= '<table  border="1" cellspacing="0" cellpadding="0" align="center">';

    $html .= '<caption>' . $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 .= '<tr><td class="c1">' . $f ['COLUMN_NAME'] . '</td>';

        $html .= '<td class="c2">' . $f ['COLUMN_TYPE'] . '</td>';

        $html .= '<td class="c3">&nbsp;' . $f ['COLUMN_DEFAULT'] . '</td>';

        $html .= '<td class="c4">&nbsp;' . $f ['IS_NULLABLE'] . '</td>';

        $html .= '<td class="c5">' . ($f ['EXTRA'] == 'auto_increment' ? '是' : '&nbsp;') . '</td>';

        $html .= '<td class="c6">&nbsp;' . $f ['COLUMN_COMMENT'] . '</td>';

        $html .= '</tr>';

    }

    $html .= '</tbody></table></p>';

}

// 输出

echo '<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>' . $title . '</title>

<style>

body,td,th {font-family:"宋体"; font-size:12px;}

table{border-collapse:collapse;border:1px solid #CCC;background:#6089D4;}

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:25px; font-size:16px; border:3px solid #fff; color:#ffffff; padding:5px;}

table td{height:25px; font-size:12px; border:3px solid #fff; background-color:#f0f0f0; padding:5px;}

.c1{ width: 150px;}

.c2{ width: 130px;}

.c3{ width: 70px;}

.c4{ width: 80px;}

.c5{ width: 80px;}

.c6{ width: 300px;}

</style>

</head>

<body>';

echo '<h1 style="text-align:center;">' . $title . '</h1>';

echo $html;

echo '</body></html>';

?>
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