In what scenarios should an UPDATE query be executed in PHP?

UPDATE queries in PHP should be executed when you need to modify existing data in a database table. This can be useful when you want to update specific records based on certain conditions or user input. For example, you might want to update a user's information after they have submitted a form with new data. 

<?php
// Connect to the database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

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

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

// Update user information
$sql = "UPDATE users SET name='John Doe', email='john.doe@example.com' WHERE id=1";

if ($conn->query($sql) === TRUE) {
    echo "Record updated successfully";
} else {
    echo "Error updating record: " . $conn->error;
}

$conn->close();
?>

Keywords

UPDATE query PHP scenarios database data manipulation

Related Questions