Hello HN,<p>just for fun I executed this in javascript:<p><pre><code> function test()
{
var r=1;
for (var i=0;i<10000000;i++)
{
r*=1.0000001;
}
return r;
}
var start = (new Date).getTime();
test();
diff = (new Date).getTime() - start;
</code></pre>
that gives me about 80ms<p>And this in PHP:<p><pre><code> function test()
{
$r=1;
for ($i=0;$i<10000000;$i++)
{
$r*=1.0000001;
}
return $r;
}
$start = microtime(true)*1000;
$r=test();
echo "$r\n";
$stop = microtime(true)*1000;
echo $stop-$start."\n";
</code></pre>
That gives me about 1300 ms on the command line and about 5000 ms when executed by apache.<p>Any ideas to explain these differences?
I just hosted your php script over here : <a href="http://khao.kodingen.com/test.php" rel="nofollow">http://khao.kodingen.com/test.php</a> and it's a lot faster but still not perfect. I get about 721ms when I run it and when I run the javascript version in firebug it's a lot slower : 1188ms.<p>I guess the browser you're using is compiling the javascript more efficiently (probably by doing some kind of crazy optimization in the for loop) while PHP is not as good for optimizing for loops.