把mysql数据库生成数据字典，直接可用便于查看数据库表、字段，做一个数据字典是很有必要的，下面只需要简单更改下配置就可以用了，样式也是挺好的。

<?php 
header("content-type:text/html;charset=utf-8"); 
define("DB_HOST","localhost"); 
define("DB_USER","root"); 
define("DB_PASS","root"); 
define("DB_NAME","test"); 
define("DB_PORT",3306); 
define("DB_CHAR","utf8"); 
define("APPNAME",""); 
$conn=mysql_connect(DB_HOST.":".DB_PORT,DB_USER,DB_PASS); 
mysql_select_db(DB_NAME); 
mysql_query("set names " . DB_CHAR); 
$sql="SHOW TABLE STATUS FROM " . DB_NAME; 
$result=mysql_query($sql); 
$array=array(); 
while($rows=mysql_fetch_assoc($result)){ 
$array[]=$rows; 
} 
// table count 
$tab_count = count($array); 
echo "<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="zh"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>".APPNAME."--数据字典</title> 
<style type="text/css"> 
  table caption, table th, table td { 
    padding: 0.1em 0.5em 0.1em 0.5em; 
    margin: 0.1em; 
    vertical-align: top; 
  } 
  th { 
    font-weight: bold; 
    color: black; 
    background: #D3DCE3; 
  } 
  table tr.odd th, .odd { 
    background: #E5E5E5; 
  } 
  table tr.even th, .even { 
    background: #f3f3f3; 
  } 
  .db_table{ 
    border-top:1px solid #333; 
  } 
  .title{font-weight:bold;} 
</style> 
</head> 
<body> 
<div style="text-align:center;background:#D3DCE3;font-size:19px;"> 
  <b>".APPNAME."--数据字典</b> 
</div> 
<div style="background:#f3f3f3;text-align:center;">（注：共".$tab_count."张表，按ctrl+F查找关键字）</div>"."
"; 
for($i=0;$i<$tab_count;$i++){ 
echo "<ul type="square">"."
"; 
echo " <li class="title">"; 
echo ($i+1)."、表名：[" . $array[$i]["Name"] . "]   注释：" . $array[$i]["Comment"]; 
echo "</li>"."
"; 
//查询数据库字段信息 
$tab_name = $array[$i]["Name"]; 
$sql_tab="show full fields from `" . $array[$i]["Name"]."`"; 
$tab_result=mysql_query($sql_tab); 
$tab_array=array(); 
  
while($r=mysql_fetch_assoc($tab_result)){ 
  $tab_array[]=$r; 
} 
//show keys 
$keys_result=mysql_query("show keys from `".$array[$i]["Name"]."`",$conn); 
$arr_keys=mysql_fetch_array($keys_result); 
  echo "<li style="list-style: none outside none;"><table border="0" class="db_table" >"; 
  echo "<tr class="head"> 
    <th style="width:110px">字段</th> 
    <th>类型</th> 
    <th>为空</th> 
    <th>额外</th> 
    <th>默认</th> 
    <th style="width:95px">整理</th> 
    <th>备注</th></tr>"; 
  for($j=0;$j<count($tab_array);$j++){ 
    $key_name=$arr_keys["Key_name"]; 
    if($key_name="PRIMARY"){ 
      $key_name="主键（".$key_name."）"; 
    } 
    $key_field=$arr_keys["Column_name"]; 
    if ( $tab_array[$j]["Field"]==$key_field){ 
      $key_value="PK"; 
    }else{ 
      $key_value=""; 
    } 
    echo "    <tr class="".($j%2==0?"odd":"even")."">"."
"; 
    echo "     <td>" . $tab_array[$j]["Field"] . "</td>"."
"; 
    echo "     <td>" . $tab_array[$j]["Type"] . "</td>"."
"; 
    echo "     <td>" . ($key_value!=""?$key_value:$tab_array[$j]["Null"]) . "</td>"."
"; 
    echo "     <td>" . $tab_array[$j]["Extra"] . "</td>"."
"; 
    echo "     <td>" . $tab_array[$j]["Default"] . "</td>"."
"; 
    echo "     <td>" . $tab_array[$j]["Collation"] . "</td>"."
"; 
    echo "     <td>" . ($key_value!=""?$key_name:$tab_array[$j]["Comment"]) . "</td>"."
"; 
    echo "    </tr>"."
"; 
  } 
  echo " </table></li>"."
"; 
  echo "</ul>"."
"; 
  
} 
echo "</body>"."
"; 
echo "</html>"."
";

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