PHP鏈結資料庫和簡單函式

//1,鏈結資料庫

$con
=mysqli_connect
('localhost'
,'root'
,'root');
//var_dump($link);
//2，判斷是否鏈結成功if(
!$con
)//3，設定字符集
mysqli_set_charset
($con
,'utf8');
//4，選擇資料庫
mysqli_select_db
($con
,'test');
//5，準備sql語句  //select update insert delete
$sql
="select * from lol"
;//6，傳送sql語句
$res
=mysqli_query
($con
,$sql);
//var_dump($res);
//7，處理結果集
$result
=mysqli_fetch_assoc
($res);
$result
=mysqli_fetch_assoc
($res);
$result
=mysqli_fetch_assoc
($res);
var_dump
($result);
//8，關閉資料庫（釋放資源）
mysqli_close
($con
);

1.一次輸出所有的結果

while

($rows
=mysqli_fetch_assoc
($res))

$result

=mysqli_fetch_row
($res);
var_dump
($result
);

$result

=mysqli_fetch_array
($res);
var_dump
($result
);

$result

=mysqli_num_rows
($res);
var_dump
($result
);

$result

=mysqli_affected_rows
($res);
var_dump
($result
);

$res

=mysqli_insert_id
($link);
var_dump
($res
);

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