Kiểm tra xem kết quả truy vấn có trống không php

mysql_query doesnt support multiple queries, a way round this is to use innodb and transactions

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
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class MySQLDB
{
   private $connection;          // The MySQL database connection

   /* Class constructor */
   function MySQLDB[]{
      /* Make connection to database */
      $this->connection = mysql_connect[DB_SERVER, DB_USER, DB_PASS] or die[mysql_error[]];
      mysql_select_db[DB_NAME, $this->connection] or die[mysql_error[]];
   }

   /* Transactions functions */

   function begin[]{
      $null = mysql_query["START TRANSACTION", $this->connection];
      return mysql_query["BEGIN", $this->connection];
   }

   function commit[]{
      return mysql_query["COMMIT", $this->connection];
   }

   function rollback[]{
      return mysql_query["ROLLBACK", $this->connection];
   }

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      $this->begin[];

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------0

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------1

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------2

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------3

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------4

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------5

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------6

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------7

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------8

this db class/function will accept an array of arrays of querys, it will auto check every line for affected rows in db, if one is 0 it will rollback and return false, else it will commit and return true, the call to the function is simple and is easy to read etc
----------9

class MySQLDB
{
   private $connection;          // The MySQL database connection0

class MySQLDB
{
   private $connection;          // The MySQL database connection1

class MySQLDB
{
   private $connection;          // The MySQL database connection2

class MySQLDB
{
   private $connection;          // The MySQL database connection3

class MySQLDB
{
   private $connection;          // The MySQL database connection4