通过php快速统计某个数据库中每张表的数据量

<?php 
$conn=mysql_connect('localhost','root',''); 
mysql_select_db('数据库',$conn); 
$sql="SELECT information_schema.TABLES.TABLE_NAME FROM information_schema. TABLES WHERE table_schema = '数据库'"; 
$res=mysql_query($sql); 
while ($result = mysql_fetch_assoc($res)) { 
$tables[]=$result['TABLE_NAME']; 
}; 
echo "<table> 
<tbody> 
<tr> 
<td>表名</td> 
<td>数据量</td> 
</tr>"; 
foreach ($tables as $k=>$v){ 
$sql_count="select count(id) AS nums,'".$v."' from ".$tables[$k]; 
$res_count=mysql_query($sql_count); 
$result_count = mysql_fetch_assoc($res_count); 
echo "<tr><td>".$result_count[$v].'</td><td>'.$result_count['nums'].'</td></tr>'; 
} 
echo "</tbody></table>" 
?>