What are common pitfalls when using PDO in PHP for binding parameters?

One common pitfall when using PDO in PHP for binding parameters is not properly specifying the data type for the parameter. This can lead to unexpected behavior or errors when executing the query. To solve this, make sure to explicitly set the data type when binding parameters using the PDO::PARAM_* constants. 

// Example of properly binding parameters with data types
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username AND age = :age");
$stmt->bindParam(':username', $username, PDO::PARAM_STR);
$stmt->bindParam(':age', $age, PDO::PARAM_INT);
$stmt->execute();

Keywords

PDO PHP binding parameters SQL injection security

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