Array_Map vs Foreach Benchmark

array_map_vs_foreach

<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');

function microtimestamp() {
  $timeofday = gettimeofday();
  return $timeofday['sec'] + $timeofday['usec'] /
    1000000;
}

function add($x){
	return $x++;
}

//Setup

unset($hthousand);
for($i=0;$i<99999;$i++){
	$hthousand[$i] = (rand()%2);
}

//Foreach

$start = microtimestamp();

foreach($hthousand as $key => $value){
	$hthousand[$key] = ($value+1);
}

$end = microtimestamp();

$result = ($end-$start);

echo "Foreach: ".$result."<br>";

//Array_Map(Value)

$start = microtimestamp();

array_map('add',$hthousand);

$end = microtimestamp();

$result = ($end-$start); 

echo "Array_Map(Value): ".$result."<br>";

//Array_Map(Reference)

$start = microtimestamp();

array_map('add',&$hthousand);

$end = microtimestamp();

$result = ($end-$start); 

echo "Array_Map(Reference): ".$result;