class Test1{
    public static function test(){
        for($i=0; $i<=1000; $i++)
            $j += $i;       
    }   
}

class Test2{
    public function test() {
        for ($i=0; $i<=1000; $i++){
            $j += $i;
        }
    }

}

对于这个算法

$time_start = microtime();
$test1 = new Test2();
for($i=0; $i<=100;$i++)
    $test1->test();
$time_end = microtime();

$time1 = $time_end - $time_start;

$time_start = microtime();
for($i=0; $i<=100;$i++)
    Test1::test();
$time_end = microtime();    

$time2 = $time_end - $time_start;
$time = $time1 - $time2;
echo "Difference: $time";

我有结果

Difference: 0.007561

而且这些天,我试图使我的方法尽可能的静态.但是真的是真的吗,至少为PHP