Try moving your -t for your output (the one after the all of the -i inputs) to before your input to make it apply to the input and not the output. Something like this: ffmpeg -hide_banner -y -ss 00:00:00 -t 00:00:53 -i ./track1.mp3 -ss 00:00:00 -t 00:04:10 -i ./track2.opus -ss 00:01:15 -t 00:00:20 -i ./track2.opus -ss 00:06:07 -t 00:00:35 -i ./track2.opus -vn -filter_complex "[0][1]acrossfade=d=2:c1=tri:c2=exp[a01];[a01][2]acrossfade=d=2:c1=tri:c2=exp[a02];[a02][3]acrossfade=d=2:c1=tri:c2=exp[output]" -map "[output]" output.mp3

ffmpeg -hide_banner -y -ss 00:00:00 -t 00:00:53 -i ./track1.mp3 -ss 00:00:00 -t 00:04:10 -i ./track2.opus -ss 00:01:15 -t 00:00:20 -i ./track2.opus -ss 00:06:07 -t 00:00:35 -i ./track2.opus -vn -filter_complex "[0][1]acrossfade=d=2:c1=tri:c2=exp[a01];[a01][2]acrossfade=d=2:c1=tri:c2=exp[a02];[a02][3]acrossfade=d=2:c1=tri:c2=exp[output]" -map "[output]" output.mp3

The "Undefined variable" error in PHP typically occurs when you're trying to use a variable that hasn't been initialized or defined within the current scope. In your case, the error is happening because the $row variable is not being defined in the scope where you're trying to access it. <?php error_reporting(E_ALL); ini_set('display_errors', 1); $servername = "localhost"; $username = "root"; $password = ""; $dbname = "myDatabase"; // Create connection $conn = new mysqli($servername, $username, $password, $dbname); // Check connection if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } $sql = "SELECT id, name FROM myTable"; $result = $conn->query($sql); if ($result === false) { die("Query failed: " . $conn->error); } if ($result->num_rows > 0) { $row = null; // Initialize the variable while($row = $result->fetch_assoc()) { echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>"; } } else { echo "0 results"; } $conn->cloRead more

<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);

$servername = "localhost";
$username = "root";
$password = "";
$dbname = "myDatabase";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT id, name FROM myTable";
$result = $conn->query($sql);

if ($result === false) {
    die("Query failed: " . $conn->error);
}

if ($result->num_rows > 0) {
    $row = null; // Initialize the variable
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
    }
} else {
    echo "0 results";
}
$conn->close();
?>

There are several approaches to handle authentication in a React Native app, but one common method is to use JSON Web Tokens (JWT). Here's a basic example of how you can implement JWT authentication in your React Native app: User Login: When a user logs in, send their credentials to the server. If the credentials are correct, the server generates a JWT token and sends it back to the client. Token Storage: Store the JWT token securely on the client-side (e.g., in AsyncStorage or SecureStore). Protected Routes: For protected routes, include the JWT token in the request header. The server verifies the token and grants access if it's valid. Token Expiry: Set an expiration time for the JWT token to improve security. Users will need to reauthenticate once the token expires. Here's a basic implementation using AsyncStorage for token storage: // Login Screen const login = async (username, password) => { try { const response = await fetch('https://your-api.com/login', { method: 'POST', headeRead more

// Login Screen
const login = async (username, password) => {
  try {
    const response = await fetch('https://your-api.com/login', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ username, password }),
    });

    const { token } = await response.json();
    await AsyncStorage.setItem('token', token);
  } catch (error) {
    console.error(error);
  }
};

// Protected Route
const getProtectedData = async () => {
  try {
    const token = await AsyncStorage.getItem('token');
    const response = await fetch('https://your-api.com/protected-data', {
      method: 'GET',
      headers: {
        'Authorization': `Bearer ${token}`,
        'Content-Type': 'application/json',
      },
    });

    const data = await response.json();
    return data;
  } catch (error) {
    console.error(error);
  }
};

Ledgers are characterized by their balance, where a credit to one account or category is matched by a corresponding debit in another. For a transaction to meet the standards of a ledger, it must either be validated by an encompassing transaction, similar to how a database transaction operates, or be supported by an adjustment record that addresses any imbalance. An encompassing transaction ensures that either the entire transaction, including both the debit and credit components, is executed, or none of it is (a rollback).