speedtest.php

<?php

Class Timer {
	public $start_timestamp;
	
	function __construct() {
		$this->start_timestamp = self::get_current_timestamp();
	}
	
	function get_duration_in_milliseconds() {
		$current_timestamp = self::get_current_timestamp();
		
		$total_time = round(($current_timestamp - $this->start_timestamp), 4);
		
		$total_time *= 1000;
		$total_time = round($total_time);
		
		return $total_time;
	}
	
	static function get_current_timestamp() {
		$time = microtime();
		$time = explode(' ', $time);
		$time = $time[1] + $time[0];
		return $time;
	}
}

const TIMES_TO_LOOP = 1000000;

// ********************* LOOP 1 **************************

$timer = new Timer();

Class NormalClass {
	const CONSTANT = 4;
	
	public $class_var;
	
	function method($input) {
		$this->class_var = $input;
		
		return self::CONSTANT * $this->class_var;
	}
}

for ( $i = 1; $i <= TIMES_TO_LOOP; $i++ ) {
	$class = new NormalClass();
	
	$temp_var = $class->method($i);
}

$total_time = $timer->get_duration_in_milliseconds();

echo "Loop 1 Time: $total_time ms<br>";


// ********************* LOOP 2 **************************

$timer = new Timer();

const GLOBAL_CONSTANT = 4;

for ( $i = 1; $i <= TIMES_TO_LOOP; $i++ ) {
	$temp_var = GLOBAL_CONSTANT * $i;
}

$total_time = $timer->get_duration_in_milliseconds();

echo "Loop 2 Time: $total_time ms<br>";