How can all records in a MySQL database be updated using PDO and a form in PHP?

To update all records in a MySQL database using PDO and a form in PHP, you can create a form with input fields for the columns you want to update and then use a PHP script to handle the form submission. Inside the PHP script, you can connect to the database using PDO, retrieve all records from the database, loop through each record, and update the values based on the form input. 

<?php
// Database connection
$dsn = 'mysql:host=localhost;dbname=database_name';
$username = 'username';
$password = 'password';

try {
    $pdo = new PDO($dsn, $username, $password);
} catch (PDOException $e) {
    die('Connection failed: ' . $e->getMessage());
}

// Handle form submission
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $stmt = $pdo->prepare("UPDATE table_name SET column1 = :value1, column2 = :value2");
    
    $stmt->bindParam(':value1', $_POST['value1']);
    $stmt->bindParam(':value2', $_POST['value2']);
    
    $stmt->execute();
    
    echo "All records updated successfully.";
}
?>

<form method="post">
    <label for="value1">Value 1:</label>
    <input type="text" name="value1" id="value1">
    
    <label for="value2">Value 2:</label>
    <input type="text" name="value2" id="value2">
    
    <button type="submit">Update All Records</button>
</form>

Keywords

MySQL PDO form update records

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