- microtime: documentation ( source)
<?php
namespace Foo {
class Bar {
public function baz() {
return \strlen('Regarding the overhead: Just keep in mind, that a typical application calls built-in functions many thousand times. Even if the difference is small: It exists.');
}
}
$start = microtime(true);
$foo = new Bar;
for($x = 0; $x < 1000000; $x++) {
$foo->baz();
}
echo "Time: " . (microtime(true) - $start ) . 'us';
}