How can excessive database connections be prevented to avoid errors like "too many connections"?

Excessive database connections can be prevented by properly managing and closing connections after their use. One way to avoid errors like "too many connections" is to use connection pooling or limit the number of concurrent connections allowed. Additionally, optimizing queries and using caching mechanisms can help reduce the number of database connections needed. 

// Example of managing database connections to prevent "too many connections" error
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

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

// Perform database operations here

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

Keywords

PHP database connections error handling MySQL connection limit

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