What are some common reasons for PHP websites experiencing downtime during peak hours?

Common reasons for PHP websites experiencing downtime during peak hours include high traffic volume overwhelming server resources, inefficient code causing slow loading times, and database connection issues. To address these issues, optimize code for better performance, increase server resources to handle high traffic, and ensure database connections are properly configured and maintained. 

// Example code to optimize PHP performance by caching database queries

// Connect to database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Cache database query results
$query = "SELECT * FROM table";
$result = $conn->query($query);
if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        // Process data
    }
} else {
    echo "0 results";
}

// Close connection
$conn->close();

Keywords

MySQL database overload Apache server crash PHP memory limit exceeded network congestion inefficient code.

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