Let's try and actually measure the difference between PHP and C function implementations.
<?php
require_once "Benchmark/Iterate.php";
$test_array = create_random_array(100);
foreach(array('max', 'my_max') as $func) {
$b = new Benchmark_Iterate;
$b->run('10000', $func, $test_array);
$result = $b->get();
print "$func\t";
printf("System + User Time: %1.6f\n",
$result['mean']);
}
function create_random_array($size) {
$array = array();
for($i=0; $i < $size; $i++) {
$array[$i] = rand();
}
return $array;
}
function my_max($array) {
reset($array);
$max = current($array);
while( $el = next($array)) {
if($el > $max) {
$max = $el;
}
}
return $max;
}
?>
