What are the potential pitfalls of using MySQL functions in PHP for database queries?

When using MySQL functions in PHP for database queries, one potential pitfall is the risk of SQL injection attacks if user input is not properly sanitized. To mitigate this risk, it is recommended to use prepared statements with parameterized queries instead. This helps prevent malicious SQL code from being injected into the query. 

// Using prepared statements with parameterized queries to prevent SQL injection

// Establish a database connection
$pdo = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');

// Prepare a SQL statement with a parameter
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');

// Bind the parameter value
$stmt->bindParam(':username', $_POST['username']);

// Execute the query
$stmt->execute();

// Fetch the results
$results = $stmt->fetchAll();

Keywords

MySQL functions PHP database queries security vulnerabilities SQL injection

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