<?php$str_sql_read="select count(*) as num from userinfo";$str_sql_del="delete from userinfo where id =1";$res =link_mysql("read",$str_sql_read);$res_del =link_mysql("delete",$str_sql_del);echo $res_del."<br/>";while($row = mysql_fetch_assoc($res)){ echo "<font style='font-size:25px;color:red;'>".$row['num']."</font><br/>";}?><?phpfunction link_mysql($opt,$str_sql){ $con = mysql_connect("localhost","root","root") or die ('Not connected : ' . mysql_error()); mysql_set_charset("gbk",$con); //if you donot know how to use this function,find it defination; mysql_select_db("website",$con); switch($opt){ case "read": $res =mysql_query($str_sql); break; case "update": case "delete": case "insert": $res =mysql_query($str_sql); break; } mysql_close(); return $res;}?>