【www.gdgbn.com--python】
mysql教程_db_query 与mysql_query 查询区别
mysql_db_query
/*
mysql_db_query语法: int mysql_db_query(string database, string query, int [link_identifier]);
mysql_db_query函数用来送出查询字符串 (query) 到后端的 MySQL 数据库教程中。而可省略的参数 link_identifier 若不存在,程序会自动寻找其它 mysql_connect() 连接后的连接代码。发生错误时会返回 false
*/
$server ="www.111cn.net";
if (!$link = mysql_connect($server, "mysql_user", "mysql_password")) {
echo "Could not connect to http://www.111cn.net mysql";
exit;
}
else
{
$query = mysql_db_query("db",$sql,$link);
if( $query )
{
while ($row = mysql_fetch_assoc($query)) {
echo $row["foo"];
}
mysql_free_result($query);
}
else
{
echo "DB Error, could not query the databasen";
echo "MySQL Error: " . mysql_error();
exit;}
}
//下面来看看关于 mysql_query函数实例
mysql_query
$cn = mysql_connect($server,"root","root");
mysql_select_db("db",$cn); //我们用mysql_db_query这里不要设置
$result = mysql_query( $sql );
while ($rs = mysql_fetch_array($result))
{
echo $row["foo"];
}
mysql_free_result($result);
/*
本站原创教程转载注明来源php教程er/php.html">http://www.111cn.net/phper/php.html
*/
?>