How can I update a table in PHP?

To update a table in PHP, you can use the SQL UPDATE statement. Here's an example of how you can update a table using PHP:

<?php
// Assuming you have a connection to your database

// Define your table name
$tableName = 'your_table_name';

// Define the values you want to update
$id = 1; // The ID of the row you want to update
$newValue = 'New Value'; // The new value you want to set

// Construct the SQL query
$sql = "UPDATE $tableName SET column_name = '$newValue' WHERE id = $id";

// Execute the query
if ($conn->query($sql) === TRUE) {
    echo "Table updated successfully.";
} else {
    echo "Error updating table: " . $conn->error;
}

// Close the database connection
$conn->close();
?>

In the above example, make sure to replace 'your_table_name' with the actual name of your table, 'column_name' with the specific column you want to update, and adjust the $id and $newValue variables according to your needs.

It's important to note that directly using variables in SQL queries can make your application vulnerable to SQL injection attacks. To mitigate this risk, it's recommended to use prepared statements or sanitize and validate the user input before using it in the query.