！！css！！！

table.db-table ??{ border-right:1px solid #ccc; border-bottom:1px solid #ccc; }
table.db-table th?{ background:#eee; padding:5px; border-left:1px solid #ccc; border-top:1px solid #ccc; }
table.db-table td?{ padding:5px; border-left:1px solid #ccc; border-top:1px solid #ccc; }

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/* 链接数据库*/
$connection = mysql_connect('localhost','username','password');
mysql_select_db('my_db',$connection);

/*?输出表 */
$result = mysql_query('SHOW TABLES',$connection) or die('cannot show tables');
while($tableName = mysql_fetch_row($result)) {

? $table = $tableName[0];
?
? echo '<h3>',$table,'</h3>';
? $result2 = mysql_query('SHOW COLUMNS FROM '.$table) or die('cannot show columns from '.$table);
? if(mysql_num_rows($result2)) {
??? echo '<table cellpadding="0" cellspacing="0" class="db-table">';
??? echo '<tr><th>Field</th><th>Type</th><th>Null</th><th>Key</th><th>Default<th>Extra</th></tr>';
??? while($row2 = mysql_fetch_row($result2)) {
????? echo '<tr>';
????? foreach($row2 as $key=>$value) {
??????? echo '<td>',$value,'</td>';
????? }
????? echo '</tr>';
??? }
??? echo '</table><br />';
? }