Detailed explanation of the steps to generate data dictionary in PHP-PHP Tutorial-php.cn

Detailed explanation of the steps to generate data dictionary in PHP

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Release： 2023-03-28 09:28:01

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This time I will bring you a detailed explanation of the steps to generate a data dictionary in PHP. What are the precautions for generating a data dictionary in PHP? Here is a practical case, let's take a look.

I’m pressed for time recently, and I don’t have time to post a blog. I’d like to take advantage of the time now to share a knowledge point with you. When we are doing development, we may often encounter the problem of analyzing the database and making a data dictionary. Now the benefit is here. You only need to follow the link I sent to easily help you design the data dictionary. You don’t need to download the data dictionary tool. As a developer, you should be able to get this knowledge with just a few lines of code. So I won’t go into nonsense now. Look at the code below. You only need to change your database account and Just enter the password and run it.

Effect display:

After talking so much nonsense, I finally started writing code:

<?php
/**
* 生成mysql数据字典
*/
//配置数据库
$dbserver  = "127.0.0.1";
$dbusername = "账号";
$dbpassword = "密码";
$database   = "数据库";
//其他配置
$title = &#39;数据字典&#39;;
$mysql_conn = @mysql_connect("$dbserver", "$dbusername", "$dbpassword") or die("Mysql connect is error.");
mysql_select_db($database, $mysql_conn);
mysql_query(&#39;SET NAMES utf8&#39;, $mysql_conn);
$table_result = mysql_query(&#39;show tables&#39;, $mysql_conn);
//取得所有的表名
while ($row = mysql_fetch_array($table_result)) {
   $tables[][&#39;TABLE_NAME&#39;] = $row[0];
}
//循环取得所有表的备注及表中列消息
foreach ($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'] . ' </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"> ' . $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>';
   }
   $html .= '</tbody></table></p>';
}
//输出
echo '<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>'.$title.'</title>
<style>
body,td,th {font-family:"宋体"; font-size:12px;}
table{border-collapse:collapse;border:1px solid #CCC;background:#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;}
table td{height:20px; font-size:12px; border:1px solid #CCC;background-color:#fff;}
.c1{ width: 120px;}
.c2{ width: 120px;}
.c3{ width: 70px;}
.c4{ width: 80px;}
.c5{ width: 80px;}
.c6{ width: 270px;}
</style>
</head>
<body>';
echo '<h1 style="text-align:center;">'.$title.'</h1>';
echo $html;
echo '</body></html>';
?>

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I believe you will read the case in this article You have mastered the method. For more exciting information, please pay attention to other related articles on the php Chinese website!