Which echo statement causes the server to work harder

[Dopple]

echo '</p>' . "\n"; 

or

echo "</p>\n"; 

[Jeff Mott]

I would guess the first one, but really the difference is so minuscule that it isn't even worth thinking about.

[Dopple]

Thanks Jeff. Can I just ask what your signature is supposed to do? It looks very intersting.

[NewsGrail]

I just tried it, for me the first one was consistently slower by around 0.0005 seconds over 10,000 iterations. You can use this bit of code to quickly benchmark code, run the script a few times to get a consistent time.

<?php
$start = explode(' ', microtime());
$start = $start['1'] + $start['0'];

$i = 0;
// Change 10000 to the number of times to run the code. The larger the function the less you will likely want to run it.
while ($i != 10000)
{
    // Code you want to benchmark goes here.
    echo "</p>\n";

    ++$i;
}

$finish = explode(' ', microtime());
$finish = $finish['1'] + $finish['0'];

echo '<p style="margin:auto;text-align:center">'.round(($finish-$start), 6).' seconds</p>';
?>

[NogDog]

I just tried it, for me the first one was consistently slower by around 0.0005 seconds over 10,000 iterations. You can use this bit of code to quickly benchmark code, run the script a few times to get a consistent time....

Is that 0.0005 seconds per iteration, or per the full 10,000 iterations. If the latter, it's not even worth a second of your time to worry about. If the former (.0005sec/instance) it's still really not worth worrying about unless you're programming some large, intense, high-demand application where every microsecond matters.

[NewsGrail]

Over the full 10,000.

[Dopple]

I thought the difference would be negligable but I just like to be tidy!
Thanks for the bit of benchmarking code though. It will come in handy!

[MrCoder]

Is that 0.0005 seconds per iteration, or per the full 10,000 iterations. If the latter, it's not even worth a second of your time to worry about. If the former (.0005sec/instance) it's still really not worth worrying about unless you're programming some large, intense, high-demand application where every microsecond matters.

In PHP??!?

[NogDog]

In PHP??!?

Exactly. When microseconds become important, it's probably time to to brush up on your Assembler skills.

[MrCoder]

Exactly. When microseconds become important, it's probably time to to brush up on your Assembler skills.

Or this..