Step 1: Conceptual Requirements
- Mobile App Integration:
PHP alone can’t directly track a mobile device. You need an Android/iOS app that:- Continuously reports the device’s GPS coordinates to the server.
- Monitors the IMEI, SIM card status, and connectivity changes.
- Backend Requirements:
- A database to store location and device information.
- RESTful APIs in PHP to handle data reporting and retrieval.
Database Schema
Create a database table for tracking device information:
CREATE TABLE device_tracker (
id INT AUTO_INCREMENT PRIMARY KEY,
imei VARCHAR(20) NOT NULL,
latitude DECIMAL(9,6) NOT NULL,
longitude DECIMAL(9,6) NOT NULL,
status ENUM('active', 'lost') DEFAULT 'active',
timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
API for Location Updates
This PHP script stores the device’s IMEI and location.
update_location.php
<?php
// Database connection
$host = "localhost";
$dbname = "tracker_db";
$username = "root";
$password = "";
try {
$conn = new PDO("mysql:host=$host;dbname=$dbname", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
die("Connection failed: " . $e->getMessage());
}
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$imei = $_POST['imei'];
$latitude = $_POST['latitude'];
$longitude = $_POST['longitude'];
$status = $_POST['status'] ?? 'active';
if (!empty($imei) && is_numeric($latitude) && is_numeric($longitude)) {
$stmt = $conn->prepare("INSERT INTO device_tracker (imei, latitude, longitude, status)
VALUES (:imei, :latitude, :longitude, :status)");
$stmt->bindParam(':imei', $imei);
$stmt->bindParam(':latitude', $latitude);
$stmt->bindParam(':longitude', $longitude);
$stmt->bindParam(':status', $status);
if ($stmt->execute()) {
echo json_encode(["status" => "success", "message" => "Location updated."]);
} else {
echo json_encode(["status" => "error", "message" => "Failed to update location."]);
}
} else {
echo json_encode(["status" => "error", "message" => "Invalid input."]);
}
}
?>
API for Fetching Location
This endpoint retrieves the latest location for a given IMEI.
get_location.php
<?php
if ($_SERVER['REQUEST_METHOD'] === 'GET') {
$imei = $_GET['imei'];
if (!empty($imei)) {
$stmt = $conn->prepare("SELECT * FROM device_tracker WHERE imei = :imei ORDER BY timestamp DESC LIMIT 1");
$stmt->bindParam(':imei', $imei);
$stmt->execute();
$location = $stmt->fetch(PDO::FETCH_ASSOC);
if ($location) {
echo json_encode(["status" => "success", "location" => $location]);
} else {
echo json_encode(["status" => "error", "message" => "No location found."]);
}
} else {
echo json_encode(["status" => "error", "message" => "IMEI is required."]);
}
}
?>
Frontend Example for Tracking
<!DOCTYPE html>
<html>
<head>
<title>Track Lost Mobile</title>
</head>
<body>
<h1>Find My Phone</h1>
<form method="GET" action="get_location.php">
<label for="imei">Enter IMEI:</label>
<input type="text" id="imei" name="imei" required>
<button type="submit">Track</button>
</form>
</body>
</html>
Security Considerations
- Authentication: Secure APIs with API keys or JWT.
- Data Encryption: Use HTTPS for secure communication.
- Device App: Build a native app to report location data automatically.
Would you like help creating the mobile app or improving the security aspect?