- array_map: documentation ( source)
- var_dump: documentation ( source)
- microtime: documentation ( source)
- range: documentation ( source)
<?php
$a = range(0, 1000);
$time = microtime(true);
array_map(function($el) { return $el; }, $a);
var_dump(microtime(true) - $time);
$time = microtime(true);
foreach ($a as $el) {
}
var_dump(microtime(true) - $time);