A naïve perftest of EmonCMS settings logic

env_var_perf_test.php

<?php 
// 10,000,000
$run_count = 10000000;

$start_time = time();

for ($i = 0; $i < $run_count; $i++) {
    //1 #### Mysql database settings
    if (isset($_ENV["MYSQL_HOST"]))     $server = $_ENV["MYSQL_HOST"];
    if (isset($_ENV["MYSQL_DATABASE"])) $database = $_ENV["MYSQL_DATABASE"];
    if (isset($_ENV["MYSQL_USER"]))     $username = $_ENV["MYSQL_USER"];
    if (isset($_ENV["MYSQL_PASSWORD"])) $password = $_ENV["MYSQL_PASSWORD"];
    if (isset($_ENV["MYSQL_PORT"]))     $port = $_ENV["MYSQL_PORT"];
    //2 #### redis
    // create the array if it's not already been done
    if (!isset($redis_server)) $redis_server = array();
    if (isset($_ENV["REDIS_ENABLED"]))  $redis_enabled = $_ENV["REDIS_ENABLED"] === 'true';
    if (isset($_ENV["REDIS_HOST"]))     $redis_server['host'] = $_ENV["REDIS_HOST"];
    if (isset($_ENV["REDIS_PORT"]))     $redis_server['port'] = $_ENV["REDIS_PORT"];
    if (isset($_ENV["REDIS_AUTH"]))     $redis_server['auth'] = $_ENV["REDIS_AUTH"];
    if (isset($_ENV["REDIS_PREFIX"]))   $redis_server['prefix'] = $_ENV["REDIS_PREFIX"];
    //3 #### MQTT
    // create the array if it's not already been done
    if (!isset($mqtt_server)) $mqtt_server = array();
    if (isset($_ENV["MQTT_ENABLED"]))  $mqtt_enabled = $_ENV["MQTT_ENABLED"] === 'true';
    if (isset($_ENV["MQTT_HOST"]))     $redis_server['host'] = $_ENV["MQTT_HOST"];
    if (isset($_ENV["MQTT_PORT"]))     $redis_server['port'] = $_ENV["MQTT_PORT"];
    if (isset($_ENV["MQTT_USER"]))     $redis_server['user'] = $_ENV["MQTT_USER"];
    if (isset($_ENV["MQTT_PASSWORD"]))     $redis_server['password'] = $_ENV["MQTT_PASSWORD"];
    if (isset($_ENV["MQTT_BASETOPIC"]))     $redis_server['basetopic'] = $_ENV["MQTT_BASETOPIC"];
}

$end_time = time();

echo 'Time taken for '.$run_count.' iterations: '.($end_time - $start_time).' seconds.';