Программа работает бур когда я бегу edit.php это показывает ошибку
view_student.php
<?php
require '../mvc/student.php';
$obj = new Student();
$result = $obj->select_all_student();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Add student info
<table><tbody><tr> <td> <a href="add_student.php">Add student</a> |
<a href="view_student.php">View student</a>
<h3>All student</h3>
</td> </tr> </tbody></table>
<?php
while($row = $result->fetch_assoc()) {
?>
<?php
}
?>
<table border="1"><tbody><tr> <th>Id</th> <th>Student name</th> <th>Email address</th> <th>Mobile number</th> <th>Action</th> </tr><tr> <td><?php echo $row['student_id'] ?></td> <td><?php echo $row['student_name'] ?></td> <td><?php echo $row['email_address'] ?></td> <td><?php echo $row['mobile_number'] ?></td> <td> <a href="edit.php?id=<?php echo $row['student_id'] ?>">Edit</a> |
<a href="delete.php?id=<?php echo $row['student_id'] ?>">Delete</a>
</td> </tr></tbody></table>
student.php
<?php
class Student {
public function __construct() {
$hostname = 'localhost';
$username = 'root';
$password = '';
$database = 'db_ci_batch21';
$this->conn = new mysqli($hostname, $username, $password, $database);
if(!$this->conn) {
die("not connected");
}
}
public function save_student($data) {
$sql = "INSERT INTO tbl_student(student_name, email_address, mobile_number)VALUES('$data[student_name]', '$data[email_address]', '$data[mobile_number]')";
if($this->conn->query($sql)) {
$message = "Save data successfully";
return $message;
} else {
$message = "Data not saved";
return $message;
exit;
}
}
public function select_all_student() {
$sql = "SELECT * FROM tbl_student";
$result = $this->conn->query($sql);
//echo '<pre>';
//print_r($result);
//exit;
return $result;
}
public function delete_student($student_id) {
$sql = "DELETE FROM tbl_student WHERE student_id = '$student_id'";
$this->conn->query($sql);
header('Location: view_student.php');
}
public function select_student_info_by_id($student_id) {
$sql = "SELECT * FROM tbl_student WHERE student_id = '$student_id' ";
$result = $this->conn->query($sql);
return $result;
}
public function update_student($data) {
$sql = "UPDATE tbl_student SET student_name='$data[student_name]', email_address='$data[email_address]', mobile_number='$data[mobile_number]' WHERE student_id='$data[student_id]' ";
$this->conn->query($sql);
header("Location:view_student.php");
}
}
?>
edit.php
<?php
require '../mvc/student.php';
$obj = new Student();
$student_id = $_GET['id'];
$result = $obj->select_student_info_by_id($student_id);
$student_info = $result->fetch_assoc();
/*echo '<pre>';
print_r($student_info);
exit;*/
if(isset($_POST['btn'])) {
$obj->update_student($_POST);
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Edit student info
<table><tbody><tr> <td> <a href="add_student.php">Add student</a> |
<a href="view_student.php">View student</a>
<h3>Edit student</h3>
</td> </tr> <tr> <td>Student name</td> <td>
</td> </tr> <tr> <td>Email address</td> <td>
</td> </tr> <tr> <td>Mobile number</td> <td>
</td> </tr> <tr> <td></td> <td>
</td> </tr> </tbody></table> add_student.php
<?php
require '../mvc/student.php';
$obj = new Student();
if(isset($_POST['btn'])) {
$message = $obj->save_student($_POST);
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Add student info
<h3>Add student</h3>
<!-- <h4 style="color: green">
<?php /*
if(isset($message)) {
echo $message;
unset($message);
}
*/?>
</h4> -->
<table><tbody><tr> <td> <a href="add_student.php">Add student</a> |
<a href="view_student.php">View student</a>
</td> </tr> <tr> <td>Student name</td> <td>
</td> </tr> <tr> <td>Email address</td> <td>
</td> </tr> <tr> <td>Mobile number</td> <td>
</td> </tr> <tr> <td></td> <td>
</td> </tr> </tbody></table>
delete.php
<?php require "../mvc/student.php"; $obj = new Student(); $student_id = $_GET['id']; //echo $student_id; $obj->delete_student($student_id); ?>
когда я запускаю edit.php
это показывает ошибку:
Обратите внимание: неопределенный индекс: id in C:\xampp\htdocs\crud_php\mvc\edit.php на линии 5
Что я уже пробовал:
когда я запускаю edit.php
это показывает ошибку:
Notice: Undefined index: id in C:\xampp\htdocs\crud_php\mvc\edit.php on line 5