//建立表的函式
 
 function creatTabel($table){
 	//建立 myspl 物件  mysqli(伺服器地址,使用者名稱,密碼,資料庫的名字)
 	$mySql  = new  mysqli("127.0.0.1","root","","zxbCreat");
 	//2,
 	if ($mySql->connect_error) {
 		exit("資料庫連線錯誤,錯誤資訊{$mySql->connect_error}");
 	} else {
 		echo "資料庫連線成功<hr>";
 	}
 	//3,設定 utf-8
 	$mySql->set_charset("utf-8");
	//4,編寫sql語句
	$sql = "create table if not exists {$table}(id int primary key auto_increment, name text, sex text, age int)";
	
	//5,執行sql語句
	$result = $mySql->query($sql);
	if ($result) {
		echo "建立表成功<hr>";
	} else {
		echo "建立表失敗<hr>";
	}
	//6,關閉資料庫
	$mySql->close();
 	
 }
 

插入資料只需要改動 sql語句    :  insert into Student (name,sex,age) values('{$name}','{$sex}',{$age})

更新資料庫   update Student set name = '{$name}',sex = '{$sex}', age = {$age} where id = {$id}

刪除資料   delete from Student where id = {$id}

查詢資料庫資訊   查詢所有

//4,編寫sql語句 
	$sql = "select * from Student";
	
	//5,執行sql語句  
	//當執行查詢語句時,query 方法的返回值 是一個物件  一個mysqli_result 型別的物件該物件中儲存的是查詢到的所有資訊
	$result = $mySql->query($sql);
	//num_rows查詢到的資料條數
	if($result -> num_rows){
		for ($i=0; $i < $result -> num_rows; $i++) {
			 //獲取每行的資料物件
			$row = $result -> fetch_object();
			//資料庫欄位名就是屬性名
			echo "id = {$row->id}<br>";
			echo "name = {$row->name}<br>";
			echo "sex = {$row->sex}<br>";
			echo "age = {$row->age}<hr>";
		}
	};
 

根據 id 查詢資料

//4,編寫sql語句 
	$sql = "select * from Student where id = {$id}";
	
	//5,執行sql語句  
	$result = $mySql->query($sql);
	
	while ($row = $result -> fetch_object()) {
		echo "id = {$row->id}<br>";
		echo "name = {$row->name}<br>";
		echo "sex = {$row->sex}<br>";
		echo "age = {$row->age}<hr>";
	}