What are some potential pitfalls to avoid when working with BLOB data in PHP for web development?

One potential pitfall when working with BLOB data in PHP for web development is not properly sanitizing user input before storing it in the database. This can lead to security vulnerabilities such as SQL injection attacks. To avoid this, always use prepared statements and parameterized queries when interacting with the database. 

// Example of using prepared statements to insert BLOB data into a database

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

// Prepare the SQL statement with a placeholder for the BLOB data
$stmt = $pdo->prepare("INSERT INTO mytable (blob_column) VALUES (:blob)");

// Bind the BLOB data to the placeholder
$stmt->bindParam(':blob', $blob_data, PDO::PARAM_LOB);

// Read the BLOB data from a file
$blob_data = file_get_contents('path/to/file.jpg');

// Execute the SQL statement
$stmt->execute();

Keywords

BLOB data PHP web development MySQL file handling

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