[PHP] echo vs printf
Why should I use printf instead of echo and vice versa? As for today I use printf mostly but I don't know why. brother Mail: [EMAIL PROTECTED] UIN: 4722160 Web: http://motd.st -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
RE: [PHP] echo vs printf
On 16-Jul-01 brother wrote:
> Why should I use printf instead of echo and vice versa?
>
printf print-formated
$a=12.3456;
echo $a, '';
printf('%1.2f', $a);
12.3456
12.34
> As for today I use printf mostly but I don't know why.
You prolly mean print; There may be some minor differences from echo,
but i've never seen 'em.
(i think they threw print in PHP to keep JAPHs happy).
Regards,
--
Don Read [EMAIL PROTECTED]
-- It's always darkest before the dawn. So if you are going to
steal the neighbor's newspaper, that's the time to do it.
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Re: [PHP] echo vs printf
i seem to remember reading somewhere that print acts like (is) a function,
presumably returning false if it cannot print to screen, whereas echo just
dumps it.
also you can drop vars in print like
print "you have $points points";
whereas to echo it you'd have to concatenate the string.
Steve
"Don Read" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>
> On 16-Jul-01 brother wrote:
> > Why should I use printf instead of echo and vice versa?
> >
>
> printf print-formated
>
> $a=12.3456;
>
> echo $a, '';
> printf('%1.2f', $a);
>
> 12.3456
> 12.34
>
> > As for today I use printf mostly but I don't know why.
>
> You prolly mean print; There may be some minor differences from echo,
> but i've never seen 'em.
> (i think they threw print in PHP to keep JAPHs happy).
>
> Regards,
> --
> Don Read [EMAIL PROTECTED]
> -- It's always darkest before the dawn. So if you are going to
>steal the neighbor's newspaper, that's the time to do it.
--
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Re: [PHP] echo vs printf
Actually, you can do the same thing with echo. echo "you have $points points"; As I understand it, echo is not a function it's a language something or other, supposedly it runs slightly faster than print given the same output. however, given it's Monday, I could be wrong. rm > > also you can drop vars in print like > > print "you have $points points"; > > whereas to echo it you'd have to concatenate the > string. > __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
RE: [PHP] echo vs printf
from the manual:
[print is a language construct [EMAIL PROTECTED]]
The print() function returns a boolean indicating the status of the call. If the
write was successful, print() returns 1. If not, it returns 0. This can be used to
detect when the client has closed the connection, and appropriate measures taken. The
builtin echo does not provide this same service.
can anyone else think of any other difference between
print and echo ?
i use print, becuase that's what i'm used to...
but i'd be curious to find out if there really
is any significant differences between the way
echo and print both work.
> -Original Message-
> From: Steve Brett [mailto:[EMAIL PROTECTED]]
> Sent: Monday, July 16, 2001 11:49 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [PHP] echo vs printf
>
>
> i seem to remember reading somewhere that print acts like (is) a function,
> presumably returning false if it cannot print to screen, whereas echo just
> dumps it.
>
> also you can drop vars in print like
>
> print "you have $points points";
>
> whereas to echo it you'd have to concatenate the string.
>
> Steve
>
>
> "Don Read" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> >
> > On 16-Jul-01 brother wrote:
> > > Why should I use printf instead of echo and vice versa?
> > >
> >
> > printf print-formated
> >
> > $a=12.3456;
> >
> > echo $a, '';
> > printf('%1.2f', $a);
> >
> > 12.3456
> > 12.34
> >
> > > As for today I use printf mostly but I don't know why.
> >
> > You prolly mean print; There may be some minor differences from echo,
> > but i've never seen 'em.
> > (i think they threw print in PHP to keep JAPHs happy).
> >
> > Regards,
> > --
> > Don Read [EMAIL PROTECTED]
> > -- It's always darkest before the dawn. So if you are going to
> >steal the neighbor's newspaper, that's the time to do it.
>
>
>
> --
> PHP General Mailing List (http://www.php.net/)
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RE: [PHP] echo vs printf
> As I understand it, echo is not a function it's a
> language something or other, supposedly it runs
> slightly faster than print given the same output.
time_start = $this->GetMicroTime();
}
function Stop(){
$time_end = $this->GetMicroTime();
$this->time_delta = $time_end - $this->time_start;
return $this->time_delta;
}
function GetMicroTime(){
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
}
print "echo vs print test\n";
$string = "foo ";
$iter = 100;
$t = new xTimer;
$t->Start();
for($i = 0; $i < $iter; $i++){
print $string;
}
$print_time = $t->Stop();
$t->Start();
for($i=0; $i < $iter; $i++){
echo $string;
}
$echo_time = $t->Stop();
print "\nprint printing $iter times: $print_time\n";
print "\necho printing $iter times: $echo_time\n";
?>
Results:
Test1:
print printing 100 times: 2.829174041748
echo printing 100 times: 3.683454990387
Test2:
print printing 100 times: 3.131462931633
echo printing 100 times: 2.8942189216614
Test3:
print printing 100 times: 5.127711057663
echo printing 100 times: 5.5264019966125
HW, Dell rackmount Server, dual CPU running Linux 2.2.16.
--Kent
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RE: [PHP] echo vs printf
I don't know what to say, my comment was based on http://www.faqts.com/knowledge_base/view.phtml/aid/1/fid/40 note the author. I ran your code in both windows and linux and got faster speeds, on a regular basis, for echo. That said, the speed differences were not great(minor is a good description), I think the greatest was half a sec for 1 million loops. rm __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] echo vs printf
"whereas to echo it you'd have to concatenate the string." false
you don't have to concat strings with echo you can print vars the same way as print
regards
16/07/01 17:48:43, "Steve Brett" <[EMAIL PROTECTED]> wrote:
>i seem to remember reading somewhere that print acts like (is) a function,
>presumably returning false if it cannot print to screen, whereas echo just
>dumps it.
>
>also you can drop vars in print like
>
>print "you have $points points";
>
>whereas to echo it you'd have to concatenate the string.
>
>Steve
>
>
>"Don Read" <[EMAIL PROTECTED]> wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>>
>> On 16-Jul-01 brother wrote:
>> > Why should I use printf instead of echo and vice versa?
>> >
>>
>> printf print-formated
>>
>> $a=12.3456;
>>
>> echo $a, '';
>> printf('%1.2f', $a);
>>
>> 12.3456
>> 12.34
>>
>> > As for today I use printf mostly but I don't know why.
>>
>> You prolly mean print; There may be some minor differences from echo,
>> but i've never seen 'em.
>> (i think they threw print in PHP to keep JAPHs happy).
>>
>> Regards,
>> --
>> Don Read [EMAIL PROTECTED]
>> -- It's always darkest before the dawn. So if you are going to
>>steal the neighbor's newspaper, that's the time to do it.
>
>
>
>--
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>For additional commands, e-mail: [EMAIL PROTECTED]
>To contact the list administrators, e-mail: [EMAIL PROTECTED]
>
>
>
>
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