What is the best practice for iterating through an array and querying a MySQL table for each element in PHP?

When iterating through an array and querying a MySQL table for each element in PHP, it is best practice to use prepared statements to prevent SQL injection attacks and improve performance. By preparing the statement outside of the loop and binding parameters inside the loop, you can efficiently query the database for each element in the array. 

// Assuming $array contains the elements to query

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

// Prepare the statement outside the loop
$stmt = $pdo->prepare("SELECT * FROM table WHERE column = :value");

// Iterate through the array and query the database for each element
foreach ($array as $element) {
    $stmt->bindParam(':value', $element);
    $stmt->execute();
    
    // Process the results
    while ($row = $stmt->fetch()) {
        // Do something with the data
    }
}

Keywords

PHP array MySQL query iteration

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