What potential issues can arise when dealing with arrays in PHP forms and databases?

When dealing with arrays in PHP forms and databases, a potential issue that can arise is properly handling and sanitizing user input to prevent SQL injection attacks. To solve this, it is important to use prepared statements and parameterized queries when interacting with the database. Additionally, validating and sanitizing user input before storing it in the database can help prevent any malicious code from being executed. 

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

// Assuming $conn is the database connection
$stmt = $conn->prepare("INSERT INTO table_name (column1, column2) VALUES (?, ?)");
$stmt->bind_param("ss", $value1, $value2);

// Assuming $value1 and $value2 are user input values
$value1 = $_POST['input1'];
$value2 = $_POST['input2'];

$stmt->execute();
$stmt->close();

Keywords

PHP arrays forms databases data validation

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