Tìm nạp trong php là gì?

Tìm nạp dữ liệu là một khía cạnh quan trọng khi nói đến PHP. Trong bài viết này, chúng ta sẽ tìm hiểu phương thức mysql_fetch_array theo thứ tự sau

Mysql_fetch_array là gì?

Hàm trả về một hàng từ một tập bản ghi dưới dạng một mảng kết hợp và một mảng số hoặc cả hai. Hàm này lấy một hàng từ hàm mysql_query() và nó trả về một mảng nếu nó ĐÚNG. Và khi xảy ra lỗi hoặc khi không còn hàng nào nữa thì FLASE

Tìm nạp trong php là gì?

Mysql không có chức năng Tìm nạp mảng. mysql_fetch_array là một hàm PHP sẽ cho phép bạn truy cập dữ liệu được lưu trữ trong kết quả được trả về từ TRUE mysql_query nếu bạn muốn biết những gì được trả về khi bạn sử dụng hàm mysql_query để truy vấn cơ sở dữ liệu Mysql. Nó không phải là thứ mà bạn có thể thao tác trực tiếp

cú pháp

mysql_fetch_array(data,array_type)

Dữ liệu bắt buộc chỉ định con trỏ dữ liệu sẽ sử dụng và con trỏ dữ liệu là kết quả từ hàm mysql_query()

Các kiểu mảng

giá trị có thể là

  • *mysql_assoc đây là một mảng kết hợp
  • *mysql_num đây là một mảng số
  • *mysql_both đây là mặc định hoặc cả hai

Mã số

đầu ra

Array

{

[0] => Refsnes

[lastname] => Refsnes

[1] =>seesee

[FirstName] => seesee

}

Một hàng dữ liệu

Hàm mysql_fetch_array lấy tài nguyên truy vấn Mysql làm đối số

($result) và nó sẽ trả về hàng dữ liệu đầu tiên được trả về bởi mysql_query

Tìm nạp trong php là gì?

Chi tiết sinh viên

Cách tiếp cận hướng đối tượng MySQLi

Mã PHP

PHP




$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
1

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
6_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
1
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5_______5_______6
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
1_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______6_______5

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn->query($query);
7
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
9
mysqli_query($conn, $query)
0
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
4_______7_______2

mysqli_query($conn, $query)
3_______4_______9
mysqli_query($conn, $query)
2_______5_______4
mysqli_query($conn, $query)
2
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
9
mysqli_query($conn, $query)
9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______8_______2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$stmt = $conn->prepare($query);
$stmt->execute();
4
$stmt = $conn->prepare($query);
$stmt->execute();
5
$conn->query($query);
7
$stmt = $conn->prepare($query);
$stmt->execute();
7

$stmt = $conn->prepare($query);
$stmt->execute();
8
$stmt = $conn->prepare($query);
$stmt->execute();
9
$stmt = $conn->prepare($query);
$stmt->execute();
5_______9_______1
$conn->close();
2
$conn->query($query);
7_______9_______4

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3____9_______6

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______9_______9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
1
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
3_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
7
Roll No: 1 - Name: Ram | City: Delhi | Age: 18
Roll No: 2 - Name: Shyam | City: Mumbai | Age: 19
Roll No: 3 - Name: Rohit | City: Chennai | Age: 18
Roll No: 4 - Name: Suresh | City: Kolkata | Age: 20
2
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
1
mysqli_query($conn, $query)
9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

mysqli_query($conn, $query)
3_______8_______4
$stmt = $conn->prepare($query);
$stmt->execute();
5
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
0

mysqli_query($conn, $query)
3_______90_______2

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
3_______90_______4

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
3_______90_______6
$stmt = $conn->prepare($query);
$stmt->execute();
5_______90_______8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
01

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
3_______90_______2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
04
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
05
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
06
$conn->close();
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
08
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10_______4_______11
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
13
$conn->close();
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
08
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
18
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
20
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
21

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
08
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10_______4_______25
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
27
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
21

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
08
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
32
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
34
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
3_______9_______6

mysqli_query($conn, $query)
3_______4_______39

mysqli_query($conn, $query)
3_______4_______41
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
2

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
3_______4_______05
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
45
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

mysqli_query($conn, $query)
3_______9_______6

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
50
$conn->query($query);
7
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
52

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
54

đầu ra

Roll No: 1 - Name: Ram | City: Delhi | Age: 18
Roll No: 2 - Name: Shyam | City: Mumbai | Age: 19
Roll No: 3 - Name: Rohit | City: Chennai | Age: 18
Roll No: 4 - Name: Suresh | City: Kolkata | Age: 20

Phương pháp thủ tục MySQLi

Mã PHP

PHP




$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
1

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
6_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
1
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5_______5_______6
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
1_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______6_______5

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______6_______7
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
82_______4_______4_______4_______84

mysqli_query($conn, $query)
3_______4_______9
mysqli_query($conn, $query)
2_______5_______4
mysqli_query($conn, $query)
2
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
9
mysqli_query($conn, $query)
9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______8_______2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______8_______4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
97_______6_______7_______4_______99

$stmt = $conn->prepare($query);
$stmt->execute();
8
$stmt = $conn->prepare($query);
$stmt->execute();
9
$stmt = $conn->prepare($query);
$stmt->execute();
5
$conn->close();
1
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
04

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3____9_______6

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______9_______9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
1
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
13_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
19_______6_______7
mysqli_query($conn, $query)
2
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
1
mysqli_query($conn, $query)
9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$stmt = $conn->prepare($query);
$stmt->execute();
4
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
27
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
29

$stmt = $conn->prepare($query);
$stmt->execute();
8
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
4

$stmt = $conn->prepare($query);
$stmt->execute();
8
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
6
$stmt = $conn->prepare($query);
$stmt->execute();
5_______90_______8
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
36
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
38

$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
39
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
05
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
06
$conn->close();
2_______90_______8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
11
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
46

$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
39
$conn->close();
2
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
13
$conn->close();
2_______90_______8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
18
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
34
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->close();
6

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn->close();
6
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
41
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
2

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
05
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
45
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3____9_______6

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______6_______7
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
52

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
54

đầu ra

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh

Phương pháp tiếp cận PDO

Mã PHP

PHP




$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
1

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
6_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
1
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5_______5_______6
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
1_______4_______7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______6_______5

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______6_______7
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
82_______4_______4_______4_______84

mysqli_query($conn, $query)
3_______4_______9
mysqli_query($conn, $query)
2_______5_______4
mysqli_query($conn, $query)
2
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
9
mysqli_query($conn, $query)
9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______8_______2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______8_______4
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
97_______6_______7_______4_______99

$stmt = $conn->prepare($query);
$stmt->execute();
8
$stmt = $conn->prepare($query);
$stmt->execute();
9
$stmt = $conn->prepare($query);
$stmt->execute();
5
$conn->close();
1
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
04

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3____9_______6

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______9_______9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
1
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
33
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3_______6_______37

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
3
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
2

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->query($query);
7
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
9
$conn->query($query);
44

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
3_______6_______46
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
84

Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
3_______4_______9
mysqli_query($conn, $query)
2
$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
4_______7_______9

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->query($query);
7
$conn->query($query);
56

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->query($query);
58
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5_______6_______7
$conn->query($query);
61
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
1
mysqli_query($conn, $query)
9

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->query($query);
65

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->query($query);
58
$conn->query($query);
68

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
2

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->query($query);
71
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
58_______6_______74

$stmt = $conn->prepare($query);
$stmt->execute();
8
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
7

$stmt = $conn->prepare($query);
$stmt->execute();
8
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
5
$conn->query($query);
58_______6_______81

$stmt = $conn->prepare($query);
$stmt->execute();
8
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
4

$stmt = $conn->prepare($query);
$stmt->execute();
8
$conn->query($query);
85
$stmt = $conn->prepare($query);
$stmt->execute();
5
CREATE TABLE `Student Details` (
  `Roll_No` int(11) NOT NULL,
  `Name` varchar(255) NOT NULL,
  `City` varchar(255) NOT NULL,
  `Age` int(11) NOT NULL,
  PRIMARY KEY (`Roll_No`)
);
9
$conn->query($query);
88
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
8
$conn->query($query);
90

$stmt = $conn->prepare($query);
$stmt->execute();
8
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
2

$conn = new PDO("mysql:host=$servername;dbname=myDB",
    $username, $password, $databasename);
39
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
05
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
06
$conn->close();
2_______90_______8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
11
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12_______4_______13
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
21

$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
04
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
18
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
20
$conn->close();
2
Roll No: 1 - Name: Ram
Roll No: 2 - Name: Shyam
Roll No: 3 - Name: Rohit
Roll No: 4 - Name: Suresh
8
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
10
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
25
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
12
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
34
$conn = mysqli_connect($servername, 
    $username, $password, $databasename);
7

Tại sao tìm nạp được sử dụng trong PHP?

Mô tả ¶ Tìm nạp một hàng từ tập hợp kết quả được liên kết với đối tượng PDOStatement. Tham số chế độ xác định cách PDO trả về hàng

Làm cách nào để tìm nạp dữ liệu trong PHP?

Thực hiện truy vấn. Sau khi kết nối với cơ sở dữ liệu, chúng ta cần chạy các truy vấn để tìm nạp dữ liệu. .
Hướng đối tượng MySQLi $conn->query($query);
MySQLi Thủ tục mysqli_query($conn, $query)
PDO. $stmt = $conn->prepare($query);

Làm cách nào để sử dụng mảng tìm nạp trong PHP?

Định nghĩa và cách sử dụng . Ghi chú. Tên trường được trả về từ hàm này phân biệt chữ hoa chữ thường. The fetch_array() / mysqli_fetch_array() function fetches a result row as an associative array, a numeric array, or both. Note: Fieldnames returned from this function are case-sensitive.

Làm cách nào để sử dụng MySQL FETCH?

Dữ liệu có thể được tìm nạp từ các bảng MySQL bằng cách thực thi câu lệnh SQL SELECT thông qua hàm mysql_query của PHP . Bạn có một số tùy chọn để lấy dữ liệu từ MySQL. Tùy chọn được sử dụng thường xuyên nhất là sử dụng hàm mysql_fetch_array(). Hàm này trả về hàng dưới dạng một mảng kết hợp, một mảng số hoặc cả hai.