Last updated: 2026‑06‑03
// Secure PDO Implementation in PHP $stmt = $pdo->prepare('SELECT * FROM articles WHERE id = :id'); $stmt->execute(['id' => $articleId]); $user = $stmt->fetch(); Use code with caution. 2. Implement Input Validation and Typecasting
To understand why this query is dangerous, it helps to break down each component of the string: inurl commy indexphp id
: This operator tells Google to look for the following string within the URL of a website.
Explain how to set up instead of displaying errors to users. Last updated: 2026‑06‑03 // Secure PDO Implementation in
Without this dork, the vulnerability could have remained hidden until a malicious actor found it first.
$id = (int)$_GET['id']; // Forces the input to be an integer, neutralizing code injection strings Use code with caution. 3. Control Search Engine Indexing via robots.txt Explain how to set up instead of displaying errors to users
// Secure Implementation using PHP PDO $id = $_GET['id']; // Prepare the SQL statement with a placeholder $stmt = $pdo->prepare('SELECT * FROM articles WHERE id = :id'); // Bind the parameter and execute $stmt->execute(['id' => $id]); $result = $stmt->fetch(); Use code with caution. 2. Implement Strict Input Validation and Type Casting
clause, the attacker determines the number of columns in the database table: index.php?id=1 ORDER BY 1-- index.php?id=1 ORDER BY 10-- (If this fails, there are fewer than 10 columns). Data Extraction : Once the column count is known, a UNION SELECT statement is used to pull information from the database: index.php?id=-1 UNION SELECT 1,2,database(),4--