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 Show 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 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
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
Mã sốđầu ra
Một hàng dữ liệu Hàm mysql_fetch_array lấy tài nguyên truy vấn Mysql làm đối số ($result) và nó sẽ trả về hàng dữ liệu đầu tiên được trả về bởi mysql_query Chi tiết sinh viên Cách tiếp cận hướng đối tượng MySQLi Mã PHP PHP$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: 202 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); $stmt->execute();5 CREATE TABLE `Student Details` ( `Roll_No` int(11) NOT NULL, `Name` varchar(255) NOT NULL, `City` varchar(255) NOT NULL, `Age` int(11) NOT NULL, PRIMARY KEY (`Roll_No`) );9 Roll No: 1 - Name: Ram Roll No: 2 - Name: Shyam Roll No: 3 - Name: Rohit Roll No: 4 - Name: Suresh0 mysqli_query($conn, $query)3_______90_______2 Roll No: 1 - Name: Ram Roll No: 2 - Name: Shyam Roll No: 3 - Name: Rohit Roll No: 4 - Name: Suresh3_______90_______4 Roll No: 1 - Name: Ram Roll No: 2 - Name: Shyam Roll No: 3 - Name: Rohit Roll No: 4 - Name: Suresh3_______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: Suresh3_______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: Suresh8 $conn = mysqli_connect($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: Suresh8 $conn = mysqli_connect($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: Suresh8 $conn = mysqli_connect($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: Suresh8 $conn = mysqli_connect($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, $databasename);7 Roll No: 1 - Name: Ram Roll No: 2 - Name: Shyam Roll No: 3 - Name: Rohit Roll No: 4 - Name: Suresh3_______9_______6 mysqli_query($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: Suresh2 Roll No: 1 - Name: Ram Roll No: 2 - Name: Shyam Roll No: 3 - Name: Rohit Roll No: 4 - Name: Suresh3_______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: Suresh4 $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: Suresh6 $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: Suresh2 $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: Suresh2 $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: Suresh3_______6_______46 $conn = mysqli_connect($servername, $username, $password, $databasename);84 Roll No: 1 - Name: Ram Roll No: 2 - Name: Shyam Roll No: 3 - Name: Rohit Roll No: 4 - Name: Suresh3_______4_______9 mysqli_query($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: Suresh4 $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: Suresh8 $conn->query($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: Suresh2 $conn = new PDO("mysql:host=$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: Suresh8 $conn = mysqli_connect($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: Suresh8 $conn = mysqli_connect($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. |