As a matter of fact, going into and out of HTML blocks generates pretty
much the same intermediate code as echo does - echo is built into the
language at the very same level. If you use printf() or something like
that, though, you'll feel a significant difference.
That wasn't the case in PHP 3.0 (as far as I recall anyway, it's been a
while).
Zeev
On Sun, 28 Oct 2001, Brian Moon wrote:
> It has always been my understanding that in/out is faster as PHP does not
> have to evalutate the terms for variables. The best test would be to use an
> app like apache bench (aka: ab) against the two pages. Like this:
>
> Test 1
> -------
> <?php
>
> $var=array(1,2,3,4,5);
> for($x=0;$x<100;$x++){
> echo "Hello";
> }
> $var2=array(6,7,8,9,10);
>
> ?>
>
>
> results:
> ---------
> This is ApacheBench, Version 1.3c <$Revision: 1.45 $> apache-1.3
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
> Copyright (c) 1998-2000 The Apache Group, http://www.apache.org/
>
> Server Software: Apache/1.3.20
> Server Hostname: phorum.org
> Server Port: 80
>
> Document Path: /~brian/test.php
> Document Length: 500 bytes
>
> Concurrency Level: 3
> Time taken for tests: 0.523 seconds
> Complete requests: 100
> Failed requests: 0
> Total transferred: 67830 bytes
> HTML transferred: 51000 bytes
> Requests per second: 191.20
> Transfer rate: 129.69 kb/s received
>
> Connnection Times (ms)
> min avg max
> Connect: 1 4 8
> Processing: 12 9 7
> Total: 13 13 15
>
>
> Test 2
> -------
> <?php
> $var=array(1,2,3,4,5);
> for($x=0;$x<100;$x++){
> ?>Hello<?php
> }
> $var2=array(6,7,8,9,10);
> ?>
>
>
> results:
> ---------
> This is ApacheBench, Version 1.3c <$Revision: 1.45 $> apache-1.3
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
> Copyright (c) 1998-2000 The Apache Group, http://www.apache.org/
>
> Server Software: Apache/1.3.20
> Server Hostname: phorum.org
> Server Port: 80
>
> Document Path: /~brian/test1.php
> Document Length: 500 bytes
>
> Concurrency Level: 3
> Time taken for tests: 0.515 seconds
> Complete requests: 100
> Failed requests: 0
> Total transferred: 67830 bytes
> HTML transferred: 51000 bytes
> Requests per second: 194.17
> Transfer rate: 131.71 kb/s received
>
> Connnection Times (ms)
> min avg max
> Connect: 1 4 8
> Processing: 11 9 7
> Total: 12 13 15
>
> -------------------------------------------
>
> So, as you can see, there is a difference but not that much. Perhaps if you
> were echoing an entire page it would make a large difference. You should
> read Nathan Wallace's paper "PHP: Hackers Paradise Revisited"
> http://www.e-gineer.com/articles/php-hackers-paradise-revisited.phtml. In
> it he talks about speed of coding and not speed of code. Take it with a
> grain of salt but it is true. Sometimes it is more important how long it
> takes to code something than it is how fast it runs. PHP makes it easy to
> code fast while making sure the code runs fast enough.
>
> Brian.
>
> ----- Original Message -----
> From: "Andre Nęss" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Sunday, October 28, 2001 6:11 PM
> Subject: [PHP-DEV] Echo vs in/out
>
>
> I'm currently in the middle of a discussion with some fellow PHP
> developers regarding the speed of what we call in/out compared to
> echo. With in/out we mean stuff like this:
>
> // php code
> ?>
> <html>some html</html>
> <?php
> // more php
>
> The manual states that PHP treats ?><?php as an echo statement, and I
> don't think there can be any speed difference between the two, however one
> of my fellow developers thinks there is a difference, and created a test
> which showed a 60% speed difference (using a for loop that ran 10000
> times). The test was badly executed IMO, so I ran my own which showed
> virtually no difference, but rather than getting into a flame-war I
> thought I'd just ask here for a quick answer. Is there a difference, and
> if so, is it significant?
>
> Regards
> André Nęss
>
>
>
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>
>
>
>
>
>
--
Zeev Suraski <[EMAIL PROTECTED]>
http://www.zend.com/
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