What are some common pitfalls to avoid when using MySQL queries in PHP for sorting and displaying data?

One common pitfall to avoid when using MySQL queries in PHP for sorting and displaying data is not properly sanitizing user input, which can lead to SQL injection attacks. To prevent this, always use prepared statements with parameterized queries. 

// Example of using prepared statements with parameterized queries to avoid SQL injection

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

// Prepare a statement with a parameterized query
$stmt = $pdo->prepare("SELECT * FROM mytable WHERE column = :value");

// Bind the parameter value
$stmt->bindParam(':value', $inputValue);

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

// Fetch the results
$results = $stmt->fetchAll();

// Display the data
foreach ($results as $row) {
    echo $row['column1'] . ' - ' . $row['column2'] . '<br>';
}

Keywords

MySQL queries PHP sorting data display error handling

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