php常用mysql操作函数

php常用的增删改查的mysql函数，需要先预设一下一些常量，如DB_HOST,DB_USER等，上码！

include_once "config.php";

function connectMysql(){
    $link=mysql_connect(DB_HOST,DB_USER,DB_PWD) or die("数据库连接失败:".mysql_errno().":".mysql_error());
    mysql_set_charset(DB_CHARSET);
    mysql_select_db(DB_NAME,$link) or die("数据库打开失败:".mysql_errno().":".mysql_error());
    return $link;
}

function insertMysql($table,$array){
    $keys=join(",",array_keys($array));
    $vals="'".join("','",array_values($array))."'";
    $sql="insert {$table}($keys) values({$vals})";
    mysql_query($sql);
    return mysql_insert_id();
}
function updateMysql($table,$array,$where=null){
    foreach($array as $key=>$val){
        if($str==null){
            $sep="";
        }else{
            $sep=",";
        }
        $str.=$sep.$key."='".$val."'";
    }
    $sql="update {$table} set {$str} ".($where==null?null:" where ".$where);
    $result=mysql_query($sql);
    //var_dump($result);
    //var_dump(mysql_affected_rows());exit;
    if($result){
        return mysql_affected_rows();
    }else{
        return false;
    }
}
function deleteMysql($table,$where=null){
    $where=$where==null?null:" where ".$where;
    $sql="delete from {$table} {$where}";
    mysql_query($sql);
    return mysql_affected_rows();
}
function fetchoneMysql($sql,$result_type=MYSQL_ASSOC){
    $result=mysql_query($sql);
    $row=mysql_fetch_array($result,$result_type);
    return $row;
}
function fetchallMysql($sql,$result_type=MYSQL_ASSOC){
    echo "ssd";
    $result=mysql_query($sql);
    while(@$row=mysql_fetch_array($result,$result_type)){
        $rows[]=$row;
    }
    return $rows;
}


function getResultNum($sql){
    $result=mysql_query($sql);
    return mysql_num_rows($result);
}


function getInsertId(){
    return mysql_insert_id();
}

?>