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PHP Anong code para maconnect ang arduino fingerprint sensor sa phpmysql

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Alieson09

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Anong code para maconnect ang arduino fingerprint sensor sa phpmysql
 
Para maconnect ang Arduino fingerprint sensor sa PHPMySQL, kailangan mo ng code na magbabasa ng fingerprint data mula sa sensor at magpapadala ng data sa MySQL database. Bukod dito, kailangan mo rin ng code na mag-a-access sa database upang mabasa ang mga nakuhang fingerprint data.

Narito ang isang halimbawa ng code para maconnect ang Arduino fingerprint sensor sa PHPMySQL:

Code:
#include <SoftwareSerial.h>
#include <Adafruit_Fingerprint.h>
#include <MySQL_Connection.h>
#include <MySQL_Cursor.h>

#define RX_PIN 2
#define TX_PIN 3

SoftwareSerial mySerial(RX_PIN, TX_PIN);
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

char server[] = "servername";
char user[] = "username";
char password[] = "password";
char database[] = "databasename";

IPAddress server_addr(192,168,1,100);
MySQL_Connection conn((Client *)&mySerial);
MySQL_Cursor cur;

void setup() {
  Serial.begin(9600);
  mySerial.begin(9600);
  finger.begin(mySerial);
  Serial.println("Starting connection to server...");
  if (conn.connect(server_addr, 3306, user, password)) {
    Serial.println("Connected to MySQL server successfully.");
    cur.execute("USE " + String(database));
  } else {
    Serial.println("Connection failed.");
    while(1);
  }
}

void loop() {
  uint8_t id = 0;
  uint8_t confidence = 0;
  id = finger.getImage();
  if (id == FINGERPRINT_OK) {
    id = finger.fingerFastSearch();
    if (id != FINGERPRINT_NOTFOUND) {
      confidence = finger.confidence;
      Serial.println("Fingerprint Matched!");
      String query = "INSERT INTO fingerprints (id, confidence) VALUES (" + String(id) + ", " + String(confidence) + ")";
      cur.execute(query);
      Serial.println("Data saved to database.");
    } else {
      Serial.println("Fingerprint not found.");
    }
  } else {
    Serial.println("Could not detect fingerprint.");
  }
  delay(1000);
}

Ang code na ito ay naglalaman ng mga libraries para sa fingerprint sensor at MySQL database. Sa setup function, ginagawa ang koneksyon sa MySQL server. Sa loop function, binabasa ng sensor ang fingerprint data at sinusulat ito sa database.

Maaari kang magdagdag ng iba pang mga function upang magbasa ng data mula sa database at maproseso ito sa iyong PHP code, depende sa iyong mga pangangailangan.
 
mga paps baka pede pahelp lagyan ng backend itong ginawa kong update profile using php
ito po code:
PHP:
<!DOCTYPE html>
<html lang="en">

<head>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>BPMS - User Dashboard</title>

    <!-- Custom fonts for this template-->
    <link href="vendor/fontawesome-free/css/all.min.css" rel="stylesheet" type="text/css">
    <link
        href="https://fonts.googleapis.com/css?family=Nunito:200,200i,300,300i,400,400i,600,600i,700,700i,800,800i,900,900i"
        rel="stylesheet">

    <!-- Custom styles for this template-->
    <link href="css/sb-admin-2.min.css" rel="stylesheet">

</head>

<body id="page-top">

    <!-- Page Wrapper -->
    <div id="wrapper">

        <!-- Sidebar -->
        <ul class="navbar-nav bg-gradient-primary sidebar sidebar-dark accordion" id="accordionSidebar">

            <!-- Sidebar - Brand -->
            <a class="sidebar-brand d-flex align-items-center justify-content-center" href="dashboarduser.<?php  ?>">
                <div class="sidebar-brand-icon rotate-n-15">
                    <i class="bi bi-bicycle"></i>
                    <svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" fill="currentColor" class="bi bi-bicycle" viewBox="0 0 16 16">
                    <path d="M4 4.5a.5.5 0 0 1 .5-.5H6a.5.5 0 0 1 0 1v.5h4.14l.386-1.158A.5.5 0 0 1 11 4h1a.5.5 0 0 1 0 1h-.64l-.311.935.807 1.29a3 3 0 1 1-.848.53l-.508-.812-2.076 3.322A.5.5 0 0 1 8 10.5H5.959a3 3 0 1 1-1.815-3.274L5 5.856V5h-.5a.5.5 0 0 1-.5-.5zm1.5 2.443-.508.814c.5.444.85 1.054.967 1.743h1.139L5.5 6.943zM8 9.057 9.598 6.5H6.402L8 9.057zM4.937 9.5a1.997 1.997 0 0 0-.487-.877l-.548.877h1.035zM3.603 8.092A2 2 0 1 0 4.937 10.5H3a.5.5 0 0 1-.424-.765l1.027-1.643zm7.947.53a2 2 0 1 0 .848-.53l1.026 1.643a.5.5 0 1 1-.848.53L11.55 8.623z"/>
                    </svg>
                </div>
                <div class="sidebar-brand-text mx-3">User</div>
            </a>

            <!-- Divider -->
            <hr class="sidebar-divider my-0">

            <!-- Nav Item - Dashboard -->
            <li class="nav-item active">
                <a class="nav-link" href="dashboarduser.php">
                    <i class="fas fa-fw fa-tachometer-alt"></i>
                    <span>Dashboard</span></a>
            </li>
            <!-- Divider -->
            <hr class="sidebar-divider">

            <li class="nav-item">
                <a class="nav-link" href="charts.html">
                    <i class="bi bi-flag-fill"></i>
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                    <path d="M14.778.085A.5.5 0 0 1 15 .5V8a.5.5 0 0 1-.314.464L14.5 8l.186.464-.003.001-.006.003-.023.009a12.435 12.435 0 0 1-.397.15c-.264.095-.631.223-1.047.35-.816.252-1.879.523-2.71.523-.847 0-1.548-.28-2.158-.525l-.028-.01C7.68 8.71 7.14 8.5 6.5 8.5c-.7 0-1.638.23-2.437.477A19.626 19.626 0 0 0 3 9.342V15.5a.5.5 0 0 1-1 0V.5a.5.5 0 0 1 1 0v.282c.226-.079.496-.17.79-.26C4.606.272 5.67 0 6.5 0c.84 0 1.524.277 2.121.519l.043.018C9.286.788 9.828 1 10.5 1c.7 0 1.638-.23 2.437-.477a19.587 19.587 0 0 0 1.349-.476l.019-.007.004-.002h.001"/>
                    </svg>
                    <span>View Report</span></a>
            </li>

            <!-- Nav Item - Tables -->
            <li class="nav-item">
                <a class="nav-link" href="tables.html">
                    <i class="fas fa-fw fa-table"></i>
                    <span>Transaction History</span></a>
            </li>

            <!-- Divider -->
            <hr class="sidebar-divider d-none d-md-block">

            <!-- Sidebar Toggler (Sidebar) -->
            <div class="text-center d-none d-md-inline">
                <button class="rounded-circle border-0" id="sidebarToggle"></button>
            </div>

            <!-- Sidebar Message -->
            

        </ul>
        <!-- End of Sidebar -->

        <!-- Content Wrapper -->
        <div id="content-wrapper" class="d-flex flex-column">

            <!-- Main Content -->
            <div id="content">

                <!-- Topbar -->
                <nav class="navbar navbar-expand navbar-light bg-white topbar mb-4 static-top shadow">

                    <!-- Sidebar Toggle (Topbar) -->
                    <button id="sidebarToggleTop" class="btn btn-link d-md-none rounded-circle mr-3">
                        <i class="fa fa-bars"></i>
                    </button>

                    <h2>Bicycle Parking Management System</h2>

                    <!-- Topbar Navbar -->
                    <ul class="navbar-nav ml-auto">

                        <!-- Nav Item - Search Dropdown (Visible Only XS) -->
                        <li class="nav-item dropdown no-arrow d-sm-none">
                            <a class="nav-link dropdown-toggle" href="#" id="searchDropdown" role="button"
                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                <i class="fas fa-search fa-fw"></i>
                            </a>
                            <!-- Dropdown - Messages -->
                            <div class="dropdown-menu dropdown-menu-right p-3 shadow animated--grow-in"
                                aria-labelledby="searchDropdown">
                                <form class="form-inline mr-auto w-100 navbar-search">
                                    <div class="input-group">
                                        <input type="text" class="form-control bg-light border-0 small"
                                            placeholder="Search for..." aria-label="Search"
                                            aria-describedby="basic-addon2">
                                        <div class="input-group-append">
                                            <button class="btn btn-primary" type="button">
                                                <i class="fas fa-search fa-sm"></i>
                                            </button>
                                        </div>
                                    </div>
                                </form>
                            </div>
                        </li>

                        <!-- Nav Item - Alerts -->
                        <li class="nav-item dropdown no-arrow mx-1">
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                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                <i class="fas fa-bell fa-fw"></i>
                                <!-- Counter - Alerts -->
                                <span class="badge badge-danger badge-counter">3+</span>
                            </a>
                            <!-- Dropdown - Alerts -->
                            <div class="dropdown-list dropdown-menu dropdown-menu-right shadow animated--grow-in"
                                aria-labelledby="alertsDropdown">
                                <h6 class="dropdown-header">
                                    Alerts Center
                                </h6>
                                <a class="dropdown-item d-flex align-items-center" href="#">
                                    <div class="mr-3">
                                        <div class="icon-circle bg-primary">
                                            <i class="fas fa-file-alt text-white"></i>
                                        </div>
                                    </div>
                                    <div>
                                        <div class="small text-gray-500">December 12, 2019</div>
                                        <span class="font-weight-bold">A new monthly report is ready to download!</span>
                                    </div>
                                </a>
                                <a class="dropdown-item d-flex align-items-center" href="#">
                                    <div class="mr-3">
                                        <div class="icon-circle bg-success">
                                            <i class="fas fa-donate text-white"></i>
                                        </div>
                                    </div>
                                    <div>
                                        <div class="small text-gray-500">December 7, 2019</div>
                                        $290.29 has been deposited into your account!
                                    </div>
                                </a>
                                <a class="dropdown-item d-flex align-items-center" href="#">
                                    <div class="mr-3">
                                        <div class="icon-circle bg-warning">
                                            <i class="fas fa-exclamation-triangle text-white"></i>
                                        </div>
                                    </div>
                                    <div>
                                        <div class="small text-gray-500">December 2, 2019</div>
                                        Spending Alert: We've noticed unusually high spending for your account.
                                    </div>
                                </a>
                                <a class="dropdown-item text-center small text-gray-500" href="#">Show All Alerts</a>
                            </div>
                        </li>

                        <!-- Nav Item - Messages -->
                        <li class="nav-item dropdown no-arrow mx-1">
                            <a class="nav-link dropdown-toggle" href="#" id="messagesDropdown" role="button"
                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                <i class="fas fa-envelope fa-fw"></i>
                                <!-- Counter - Messages -->
                                <span class="badge badge-danger badge-counter">7</span>
                            </a>
                            <!-- Dropdown - Messages -->
                            <div class="dropdown-list dropdown-menu dropdown-menu-right shadow animated--grow-in"
                                aria-labelledby="messagesDropdown">
                                <h6 class="dropdown-header">
                                    Message Center
                                </h6>
                                <a class="dropdown-item d-flex align-items-center" href="#">
                                    <div class="dropdown-list-image mr-3">
                                        <img class="rounded-circle" src="img/undraw_profile_1.svg"
                                            alt="...">
                                        <div class="status-indicator bg-success"></div>
                                    </div>
                                    <div class="font-weight-bold">
                                        <div class="text-truncate">Hi there! I am wondering if you can help me with a
                                            problem I've been having.</div>
                                        <div class="small text-gray-500">Emily Fowler · 58m</div>
                                    </div>
                                </a>
                                <a class="dropdown-item d-flex align-items-center" href="#">
                                    <div class="dropdown-list-image mr-3">
                                        <img class="rounded-circle" src="img/undraw_profile_2.svg"
                                            alt="...">
                                        <div class="status-indicator"></div>
                                    </div>
                                    <div>
                                        <div class="text-truncate">I have the photos that you ordered last month, how
                                            would you like them sent to you?</div>
                                        <div class="small text-gray-500">Jae Chun · 1d</div>
                                    </div>
                                </a>
                                <a class="dropdown-item d-flex align-items-center" href="#">
                                    <div class="dropdown-list-image mr-3">
                                        <img class="rounded-circle" src="img/undraw_profile_3.svg"
                                            alt="...">
                                        <div class="status-indicator bg-warning"></div>
                                    </div>
                                    <div>
                                        <div class="text-truncate">Last month's report looks great, I am very happy with
                                            the progress so far, keep up the good work!</div>
                                        <div class="small text-gray-500">Morgan Alvarez · 2d</div>
                                    </div>
                                </a>
                                <a class="dropdown-item d-flex align-items-center" href="#">
                                    <div class="dropdown-list-image mr-3">
                                        <img class="rounded-circle" src="https://source.unsplash.com/Mv9hjnEUHR4/60x60"
                                            alt="...">
                                        <div class="status-indicator bg-success"></div>
                                    </div>
                                    <div>
                                        <div class="text-truncate">Am I a good boy? The reason I ask is because someone
                                            told me that people say this to all dogs, even if they aren't good...</div>
                                        <div class="small text-gray-500">Chicken the Dog · 2w</div>
                                    </div>
                                </a>
                                <a class="dropdown-item text-center small text-gray-500" href="#">Read More Messages</a>
                            </div>
                        </li>

                        <div class="topbar-divider d-none d-sm-block"></div>

                        <!-- Nav Item - User Information -->
                        <li class="nav-item dropdown no-arrow">
                            <a class="nav-link dropdown-toggle" href="#" id="userDropdown" role="button"
                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                <span class="mr-2 d-none d-lg-inline text-gray-600 small">Douglas McGee</span>
                                <img class="img-profile rounded-circle"
                                    src="img/undraw_profile.svg">
                            </a>
                            <!-- Dropdown - User Information -->
                            <div class="dropdown-menu dropdown-menu-right shadow animated--grow-in"
                                aria-labelledby="userDropdown">
                                <a class="dropdown-item" href="ProfileUser.php">
                                    <i class="fas fa-user fa-sm fa-fw mr-2 text-gray-400"></i>
                                    Profile
                                </a>
                                <div class="dropdown-divider"></div>
                                <a class="dropdown-item" href="logout.php" data-toggle="modal" data-target="#logoutModal">
                                    <i class="fas fa-sign-out-alt fa-sm fa-fw mr-2 text-gray-400"></i>
                                    Logout
                                </a>
                            </div>
                        </li>

                    </ul>

                </nav>
                <!-- End of Topbar -->

                <!-- Begin Page Content -->
                <div class="container-fluid">

                    <!-- Page Heading -->
                    <div class="d-sm-flex align-items-center justify-content-between mb-4">
                        <h1 class="h3 mb-0 text-gray-800">User Profile</h1>
                        <a href="#" class="d-none d-sm-inline-block btn btn-sm btn-primary shadow-sm"><i
                                class="fas fa-download fa-sm text-white-50"></i> Generate Report</a>
                    </div>
                    <!-- Card Body -->

                    <div class="card shadow mb-4">
                        <div class="card-header py-3">
                            <h6 class="m-0 font-weight-bold text-primary">Profile Page</h6>
                        </div>
                        <div class="card-body">
                            <form action="" method="POST" enctype="multipart/form-data" class="form-horizontal">
                                <div class="row form-group">
                                        <div class="col col-md-3"><label for="text-input" class=" form-control-label">Full Name</label></div>
                                        <div class="col-12 col-md-9"> <input type="text" name="fullname" required="true" class="form-control" value="">
                                            <br></div>
                                    </div>
                                    <div class="row form-group">
                                        <div class="col col-md-3"><label for="text-input" class=" form-control-label">Address</label></div>
                                        <div class="col-12 col-md-9"> <input type="text" name="address" required="true" class="form-control" value="">
                                            </div>
                                    </div>
                                    <div class="row form-group">
                                        <div class="col col-md-3"><label for="text-input" class=" form-control-label">Contact Number</label></div>
                                        <div class="col-12 col-md-9"> <input type="text" name="mobilenumber" required="true" class="form-control" readonly="true" value="">
                                            </div>
                                    </div>
                                    <div class="row form-group">
                                        <div class="col col-md-3"><label for="text-input" class=" form-control-label">Email Address</label></div>
                                        <div class="col-12 col-md-9"> <input type="text" name="email" required="true" class="form-control" value="" readonly="true">
                                            </div>
                                    </div>
                                    <div class="row form-group">
                                        <div class="col col-md-3"><label for="text-input" class=" form-control-label">Registration</label></div>
                                        <div class="col-12 col-md-9"> <input type="text" name="regist" required="true" class="form-control" value="" readonly="true">
                                            </div>
                                    </div>
                                    
                                    <p style="text-align: center;"> <button type="submit" class="btn btn-primary btn-sm" name="submit" >Update</button></p>
                            </form>
                            </div>
                            </div>
                              
                                    


    <!-- Scroll to Top Button-->
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    </a>

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        aria-hidden="true">
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</body>
</html>
 
Sure, I can help you with that! Here's a simple program in Java that asks the user for input values of voltage and resistance, and then calculates the current and power using Ohm's Law formulas.

Java:
import java.util.Scanner;

public class OhmsLaw {
    public static void main(String[] args) {

        // Create a Scanner object to obtain user input
        Scanner input = new Scanner(System.in);

        // Prompt the user for voltage and resistance values
        System.out.print("Enter the voltage value: ");
        double voltage = input.nextDouble();
        System.out.print("Enter the resistance value: ");
        double resistance = input.nextDouble();

        // Calculate the current and power using Ohm's Law formulas
        double current = voltage / resistance;
        double power = voltage * current;

        // Display the calculated values
        System.out.println("Current: " + current + " Amps");
        System.out.println("Power: " + power + " Watts");
    }
}

To run this program, copy the code and paste it into a file named OhmsLaw.java. Then, open a command prompt or terminal window and navigate to the directory where the file is saved. Finally, compile and run the program by typing the following commands:

Code:
javac OhmsLaw.java
java OhmsLaw

I hope this helps! Let me know if you have any questions or if there's anything else I can do for you.
 
To create a program that allows users to change their password using PHP, follow these steps:

1. Create a form: Create a HTML form that allows users to enter their current password, new password, and confirm new password.

Code:
<form action="change_password.php" method="POST">
  <label for="current_password">Current Password:</label>
  <input type="password" id="current_password" name="current_password"><br>

  <label for="new_password">New Password:</label>
  <input type="password" id="new_password" name="new_password"><br>

  <label for="confirm_password">Confirm New Password:</label>
  <input type="password" id="confirm_password" name="confirm_password"><br>

  <input type="submit" value="Change Password">
</form>

2. Validate input: In the PHP script that the form is submitted to, validate that the user has entered their current password correctly, and that the new password and confirm new password fields match.

Code:
$current_password = $_POST['current_password'];
$new_password = $_POST['new_password'];
$confirm_password = $_POST['confirm_password'];

// Check that current password is correct
if ($current_password != "current_password") {
  echo "Your current password is incorrect.";
  exit();
}

// Check that new password and confirm new password match
if ($new_password != $confirm_password) {
  echo "Your new password and confirm password do not match.";
  exit();
}

3. Change password: If the input is valid, change the user's password in the database.

Code:
// Change password in database
// Replace this with code that updates your database with the new password
echo "Your password has been changed successfully.";

Here's the complete code:

Code:
<?php
$current_password = $_POST['current_password'];
$new_password = $_POST['new_password'];
$confirm_password = $_POST['confirm_password'];

// Check that current password is correct
if ($current_password != "current_password") {
  echo "Your current password is incorrect.";
  exit();
}

// Check that new password and confirm new password match
if ($new_password != $confirm_password) {
  echo "Your new password and confirm password do not match.";
  exit();
}

// Change password in database
// Replace this with code that updates your database with the new password
echo "Your password has been changed successfully.";
?>

Remember to replace the placeholder code that changes the password in the database with your own code that interacts with your database. Also, make sure to use secure password storage techniques such as salting and hashing.
 
mga master baka pede pa help sa pag update ng profile galing sa databased ito
PHP:
<!DOCTYPE html>
<html lang="en">

<head>

    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>BPMS - User Dashboard</title>

    <!-- Custom fonts for this template-->
    <link href="vendor/fontawesome-free/css/all.min.css" rel="stylesheet" type="text/css">
    <link
        href="https://fonts.googleapis.com/css?family=Nunito:200,200i,300,300i,400,400i,600,600i,700,700i,800,800i,900,900i"
        rel="stylesheet">

    <!-- Custom styles for this template-->
    <link href="css/sb-admin-2.min.css" rel="stylesheet">

</head>

<body id="page-top">

    <!-- Page Wrapper -->
    <div id="wrapper">

        <!-- Sidebar -->
        <ul class="navbar-nav bg-gradient-primary sidebar sidebar-dark accordion" id="accordionSidebar">

            <!-- Sidebar - Brand -->
            <a class="sidebar-brand d-flex align-items-center justify-content-center" href="dashboarduser.php">
                <div class="sidebar-brand-icon rotate-n-15">
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Para maconnect ang Arduino fingerprint sensor sa PHPMySQL, kailangan mo ng code na magbabasa ng fingerprint data mula sa sensor at magpapadala ng data sa MySQL database. Bukod dito, kailangan mo rin ng code na mag-a-access sa database upang mabasa ang mga nakuhang fingerprint data.

Narito ang isang halimbawa ng code para maconnect ang Arduino fingerprint sensor sa PHPMySQL:

Code:
#include <SoftwareSerial.h>
#include <Adafruit_Fingerprint.h>
#include <MySQL_Connection.h>
#include <MySQL_Cursor.h>

#define RX_PIN 2
#define TX_PIN 3

SoftwareSerial mySerial(RX_PIN, TX_PIN);
Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);

char server[] = "servername";
char user[] = "username";
char password[] = "password";
char database[] = "databasename";

IPAddress server_addr(192,168,1,100);
MySQL_Connection conn((Client *)&mySerial);
MySQL_Cursor cur;

void setup() {
  Serial.begin(9600);
  mySerial.begin(9600);
  finger.begin(mySerial);
  Serial.println("Starting connection to server...");
  if (conn.connect(server_addr, 3306, user, password)) {
    Serial.println("Connected to MySQL server successfully.");
    cur.execute("USE " + String(database));
  } else {
    Serial.println("Connection failed.");
    while(1);
  }
}

void loop() {
  uint8_t id = 0;
  uint8_t confidence = 0;
  id = finger.getImage();
  if (id == FINGERPRINT_OK) {
    id = finger.fingerFastSearch();
    if (id != FINGERPRINT_NOTFOUND) {
      confidence = finger.confidence;
      Serial.println("Fingerprint Matched!");
      String query = "INSERT INTO fingerprints (id, confidence) VALUES (" + String(id) + ", " + String(confidence) + ")";
      cur.execute(query);
      Serial.println("Data saved to database.");
    } else {
      Serial.println("Fingerprint not found.");
    }
  } else {
    Serial.println("Could not detect fingerprint.");
  }
  delay(1000);
}

Ang code na ito ay naglalaman ng mga libraries para sa fingerprint sensor at MySQL database. Sa setup function, ginagawa ang koneksyon sa MySQL server. Sa loop function, binabasa ng sensor ang fingerprint data at sinusulat ito sa database.

Maaari kang magdagdag ng iba pang mga function upang magbasa ng data mula sa database at maproseso ito sa iyong PHP code, depende sa iyong mga pangangailangan.
error: no matching function for call to 'MySQL_Cursor::MySQL_Cursor()'
 
error: no matching function for call to 'MySQL_Cursor::MySQL_Cursor()'
Ang error na "no matching function for call to 'MySQL_Cursor::MySQL_Cursor()'" ay nangangahulugang hindi nakikita ng compiler ang isang kaukulang konstruktora para sa MySQL_Cursor. Maaaring may kakulangan sa iyong code o hindi naitama ang mga libraries.

Ito ang posibleng mga dahilan at solusyon:

1. Siguraduhin na naka-install ang tamang libraries.

Siguraduhin na naka-install mo ang mga libraries na kinakailangan para sa MySQL_Cursor. Maaaring gamitin ang Library Manager sa Arduino IDE upang mag-install ng mga libraries.

2. I-update ang mga libraries.

Kung naka-install na ang mga libraries, subukan mong i-update ang mga ito sa pinakabagong bersyon. Maaaring mag-cause ng error ang mga outdated na libraries.

3. I-check ang mga konstruktora.

Siguraduhin na mayroong kaukulang konstruktora na nakalagay sa code. Halimbawa:

Code:
MySQL_Cursor cur = MySQL_Cursor(&conn);

Ginagamit dito ang konstruktora ng MySQL_Cursor na nagtatanggap ng isang parameter, ang MySQL_Connection object.

4. I-check ang mga syntax errors.

I-check kung mayroong ibang syntax errors sa code. Maaaring nagiging sanhi ito ng error sa MySQL_Cursor.

Kung hindi pa rin maayos ang error, maaring isubmit ang buong code para mas mapagaralan.
 
This error message usually occurs when you try to create an instance of the MySQL_Cursor class, but there is no default constructor defined in the class.

To fix this error, you need to define a constructor for the MySQL_Cursor class that can be called without any arguments. Alternatively, you can pass the required arguments to the constructor when creating the instance of the class.

Here's an example of how you can define a constructor for the MySQL_Cursor class that takes no arguments:

Code:
class MySQL_Cursor {
public:
    MySQL_Cursor() {
        // constructor code here
    }
    // other member functions here
};

In this example, the constructor for the MySQL_Cursor class takes no arguments and can be called without any errors.

Make sure to update your code accordingly and ensure that any required arguments are passed to the constructor when creating the instance of the class.
 
Ang error na "no matching function for call to 'MySQL_Cursor::MySQL_Cursor()'" ay nangangahulugang hindi nakikita ng compiler ang isang kaukulang konstruktora para sa MySQL_Cursor. Maaaring may kakulangan sa iyong code o hindi naitama ang mga libraries.

Ito ang posibleng mga dahilan at solusyon:

1. Siguraduhin na naka-install ang tamang libraries.

Siguraduhin na naka-install mo ang mga libraries na kinakailangan para sa MySQL_Cursor. Maaaring gamitin ang Library Manager sa Arduino IDE upang mag-install ng mga libraries.

2. I-update ang mga libraries.

Kung naka-install na ang mga libraries, subukan mong i-update ang mga ito sa pinakabagong bersyon. Maaaring mag-cause ng error ang mga outdated na libraries.

3. I-check ang mga konstruktora.

Siguraduhin na mayroong kaukulang konstruktora na nakalagay sa code. Halimbawa:

Code:
MySQL_Cursor cur = MySQL_Cursor(&conn);

Ginagamit dito ang konstruktora ng MySQL_Cursor na nagtatanggap ng isang parameter, ang MySQL_Connection object.

4. I-check ang mga syntax errors.

I-check kung mayroong ibang syntax errors sa code. Maaaring nagiging sanhi ito ng error sa MySQL_Cursor.

Kung hindi pa rin maayos ang error, maaring isubmit ang buong code para mas mapagaralan.
pede mo ba ibigay sakin ang link para madownload ang mysql_cursor
 
pede mo ba ibigay sakin ang link para madownload ang mysql_cursor
Ang MySQL_Cursor ay bahagi ng MySQL Connector/Arduino library na maaari mo i-download sa official website ng MySQL. Narito ang link sa download page: You do not have permission to view the full content of this post. Log in or register now.

Sa page na ito, piliin ang pinakabagong bersyon ng library na tugma sa iyong Arduino IDE. Sundin ang mga tagubilin sa installation process upang ma-install ang library.

Tandaan na may iba't ibang mga libraries ang maaaring i-download depende sa iyong OS at platform na ginagamit. Siguraduhin na pumili ng tamang library para sa iyong paggamit.
 
Compilation error: no matching function for call to 'MySQL_Cursor::MySQL_Cursor()'
Ang error na "no matching function for call to 'MySQL_Cursor::MySQL_Cursor()'" ay nangangahulugang hindi nakikita ng compiler ang kaukulang konstruktora para sa MySQL_Cursor. Maaaring may kakulangan sa iyong code o hindi naitama ang mga libraries.

Narito ang ilang posibleng solusyon sa error na ito:

1. Siguraduhing naka-install ang mga kinakailangang libraries at dependencies.

Siguraduhing naka-install mo ang lahat ng mga libraries at dependencies na kinakailangan para sa MySQL_Cursor. Maaaring magamit ang Arduino Library Manager upang mag-install ng mga libraries.

2. Tiyakin na naitama ang mga konstruktora sa code.

Siguraduhing mayroong kaukulang konstruktora na nakapaloob sa code. Halimbawa:

Code:
MySQL_Cursor cur = MySQL_Cursor(&conn);

Ito ay ginagamit ang konstruktora ng MySQL_Cursor na mayroong isang parameter, ang MySQL_Connection object.

3. I-check ang mga syntax errors.

I-check ang lahat ng mga syntax errors sa iyong code, dahil maaaring magdulot ito ng error sa MySQL_Cursor. Tiyaking tama ang lahat ng mga sintaksis at walang mga kulang sa code.

Kung hindi pa rin maayos ang error, maaring isubmit ang buong code para mas mapagaralan.
 
Ang error na "no matching function for call to 'MySQL_Cursor::MySQL_Cursor()'" ay nangangahulugang hindi nakikita ng compiler ang kaukulang konstruktora para sa MySQL_Cursor. Maaaring may kakulangan sa iyong code o hindi naitama ang mga libraries.

Narito ang ilang posibleng solusyon sa error na ito:

1. Siguraduhing naka-install ang mga kinakailangang libraries at dependencies.

Siguraduhing naka-install mo ang lahat ng mga libraries at dependencies na kinakailangan para sa MySQL_Cursor. Maaaring magamit ang Arduino Library Manager upang mag-install ng mga libraries.

2. Tiyakin na naitama ang mga konstruktora sa code.

Siguraduhing mayroong kaukulang konstruktora na nakapaloob sa code. Halimbawa:

Code:
MySQL_Cursor cur = MySQL_Cursor(&conn);

Ito ay ginagamit ang konstruktora ng MySQL_Cursor na mayroong isang parameter, ang MySQL_Connection object.

3. I-check ang mga syntax errors.

I-check ang lahat ng mga syntax errors sa iyong code, dahil maaaring magdulot ito ng error sa MySQL_Cursor. Tiyaking tama ang lahat ng mga sintaksis at walang mga kulang sa code.

Kung hindi pa rin maayos ang error, maaring isubmit ang buong code para mas mapagaralan.
Compilation error: no matching function for call to 'MySQL_Cursor::execute(StringSumHelper&)'
 
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