What are common pitfalls to avoid when creating tables with multiple columns in PHP?

One common pitfall to avoid when creating tables with multiple columns in PHP is not properly sanitizing user input before inserting it into the database. This can lead to SQL injection attacks. To solve this, always use prepared statements with parameterized queries to prevent SQL injection vulnerabilities. 

// Example of using prepared statements to insert data into a table with multiple columns
$stmt = $pdo->prepare("INSERT INTO table_name (column1, column2, column3) VALUES (:value1, :value2, :value3)");
$stmt->bindParam(':value1', $value1);
$stmt->bindParam(':value2', $value2);
$stmt->bindParam(':value3', $value3);

// Set parameter values
$value1 = $_POST['input1'];
$value2 = $_POST['input2'];
$value3 = $_POST['input3'];

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

Keywords

SQL database design normalization indexing data types

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