What are some common methods for implementing user bans in PHP?

One common method for implementing user bans in PHP is to create a database table to store banned user information, such as user ID and ban reason. When a user tries to access restricted content or perform a restricted action, their user ID can be checked against the banned user table to determine if they are banned. 

```php
// Check if user is banned
function isUserBanned($userId) {
    // Connect to database
    $conn = new mysqli('localhost', 'username', 'password', 'dbname');

    // Query to check if user is banned
    $query = "SELECT * FROM banned_users WHERE user_id = $userId";
    $result = $conn->query($query);

    if ($result->num_rows > 0) {
        return true; // User is banned
    } else {
        return false; // User is not banned
    }
}
```

This code snippet demonstrates a function that checks if a user is banned by querying a database table named "banned_users" for the user's ID. If the user is found in the table, the function returns true, indicating that the user is banned. Otherwise, it returns false.

Keywords

PHP user bans implementation methods security

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