What potential issues can arise when trying to insert multiple entries into a database using PHP?

One potential issue that can arise when trying to insert multiple entries into a database using PHP is the inefficiency of executing individual insert queries for each entry. This can lead to slower performance and increased server load. To solve this, you can use prepared statements and execute a single query to insert multiple entries at once. 

<?php
// Sample code to insert multiple entries into a database using prepared statements

// Assuming $entries is an array of entries to be inserted
$entries = [
    ['John', 'Doe'],
    ['Jane', 'Smith'],
    ['Alice', 'Johnson']
];

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

// Prepare the insert query
$stmt = $pdo->prepare('INSERT INTO users (first_name, last_name) VALUES (?, ?)');

// Iterate through the entries and execute the query with each entry
foreach ($entries as $entry) {
    $stmt->execute($entry);
}

// Close the database connection
$pdo = null;
?>

Keywords

SQL injection PDO prepared statements database transactions data validation

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