How can developers test if the database they are using restricts the use of certain characters like ';' for query separation?

Developers can test if the database restricts the use of certain characters like ';' for query separation by attempting to execute a query containing the restricted character and checking for any errors or exceptions thrown by the database. This can help ensure that the database is properly sanitizing input to prevent SQL injection attacks. 

<?php

// Attempt to execute a query containing the restricted character ';'
$query = "SELECT * FROM users WHERE username = 'admin'; DROP TABLE users;";
$result = mysqli_query($connection, $query);

// Check for any errors or exceptions thrown by the database
if (!$result) {
    echo "Error: " . mysqli_error($connection);
}

?>

Keywords

PHP database character restriction query separation testing

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