What potential issue is the user facing with their PHP script and how can it be resolved?

The user is facing an issue where their PHP script is not properly escaping special characters in SQL queries, leaving their application vulnerable to SQL injection attacks. This issue can be resolved by using prepared statements with parameterized queries, which automatically escape special characters and prevent SQL injection attacks. 

// Create a connection to the database
$pdo = new PDO("mysql:host=localhost;dbname=myDB", "username", "password");

// Prepare a SQL query using a parameterized statement
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");

// Bind the parameter to the query
$stmt->bindParam(':username', $username);

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

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

Keywords

syntax error missing semicolon parse error unexpected troubleshooting

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