PHP Constructor vs Static Init performance test

constructor-vs-static.php

<pre>
<?php
ini_set( 'display_errors', 'On' );
error_reporting( E_ALL );


function test_function() {
	$test = rand();
	return $test;
}
class StaticInit {
	public static function init() {
		$test = rand();
		return $test;
	}
}
class Constructor {
	public function __construct() {
		$test = rand();
		return $test;
	}
}


function do_function( $times ) {
	for ( $i = 0; $i < $times; $i++ ) {
		test_function();
	}
}
function do_static( $times ) {
	for ( $i = 0; $i < $times; $i++ ) {
		StaticInit::init();
	}
}

function do_constructor( $times ) {
	for ( $i = 0; $i < $times; $i++ ) {
		new Constructor();
	}
}


$times_to_execute = 100000;
echo "Times executing test:  $times_to_execute\n\n";


$startTime = microtime(true);
do_function( $times_to_execute );
$functionDuration = number_format(( microtime(true) - $startTime), 6);
echo "Time with function-only:  $functionDuration Seconds\n";

$startTime = microtime(true);
do_static( $times_to_execute );
$staticDuration = number_format(( microtime(true) - $startTime), 6);
echo "Time with static:  $staticDuration Seconds\n";

$startTime = microtime(true);
do_constructor( $times_to_execute );
$constructorDuration = number_format(( microtime(true) - $startTime), 6);
echo "Time with constructor:  $constructorDuration Seconds\n";


$faster = number_format( $staticDuration / $constructorDuration, 3 ) * 100;
echo "\nConstructor method is $faster% the speed of the Static method"
?>
</pre>