php-general Digest 3 Jul 2011 01:28:24 -0000 Issue 7386

Topics (messages 313835 through 313841):

PHP EOL
        313835 by: Karl DeSaulniers
        313836 by: viraj
        313837 by: Karl DeSaulniers
        313838 by: Stuart Dallas
        313841 by: viraj

Re: [PHP-DB] PHP EOL
        313839 by: Tamara Temple

Re: [PHP-DB] Re: [PHP] PHP EOL
        313840 by: Karl DeSaulniers

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----------------------------------------------------------------------
--- Begin Message ---
Hello All,
Happy pre independence for my American PHPers. And good health to all others.
Have a quick question..

I have this code I use for the end of line characters used in my mailers.

[Code]
// Is the OS Windows or Mac or Linux
if (strtoupper(substr(PHP_OS,0,5)=='WIN')) {
        $eol="\r\n";
} else if (strtoupper(substr(PHP_OS,0,5)=='MAC')) {
        $eol="\r";
} else {
        $eol="\n";
}
[End Code]

Does this suffice or should I be using the php supplied end of line?

$eol=PHP_EOL;

Or do these do the same thing?
What advantages over the code I use does the PHP_EOL have?
Or does it not matter with these and either are good to go?

It seems to me that they do the same thing.. am I on the right track or missing something? Is there any other OS's that are not WIN or MAC and use the "\r" or "\r\n" ?
If their are, then I can see an advantage of using the PHP_EOL.

Like I said, just a quick question. ;)


Karl DeSaulniers
Design Drumm
http://designdrumm.com


--- End Message ---
--- Begin Message ---
PHP_EOL is the best fit. you do not have to write multiple lines of
code to do the same thing.

~viraj

p.s. cross-posting is bad. removed db. from the cc list.

On Sat, Jul 2, 2011 at 1:31 PM, Karl DeSaulniers <k...@designdrumm.com> wrote:
> Hello All,
> Happy pre independence for my American PHPers. And good health to all
> others.
> Have a quick question..
>
> I have this code I use for the end of line characters used in my mailers.
>
> [Code]
> // Is the OS Windows or Mac or Linux
> if (strtoupper(substr(PHP_OS,0,5)=='WIN')) {
>        $eol="\r\n";
> } else if (strtoupper(substr(PHP_OS,0,5)=='MAC')) {
>        $eol="\r";
> } else {
>        $eol="\n";
> }
> [End Code]
>
> Does this suffice or should I be using the php supplied end of line?
>
> $eol=PHP_EOL;
>
> Or do these do the same thing?
> What advantages over the code I use does the PHP_EOL have?
> Or does it not matter with these and either are good to go?
>
> It seems to me that they do the same thing.. am I on the right track or
> missing something?
> Is there any other OS's that are not WIN or MAC and use the "\r" or "\r\n" ?
> If their are, then I can see an advantage of using the PHP_EOL.
>
> Like I said, just a quick question. ;)
>
>
> Karl DeSaulniers
> Design Drumm
> http://designdrumm.com
>
>

--- End Message ---
--- Begin Message ---
On Jul 2, 2011, at 3:10 AM, viraj wrote:

PHP_EOL is the best fit. you do not have to write multiple lines of
code to do the same thing.

~viraj

p.s. cross-posting is bad. removed db. from the cc list.

On Sat, Jul 2, 2011 at 1:31 PM, Karl DeSaulniers <k...@designdrumm.com> wrote:
Hello All,
Happy pre independence for my American PHPers. And good health to all
others.
Have a quick question..

I have this code I use for the end of line characters used in my mailers.

[Code]
// Is the OS Windows or Mac or Linux
if (strtoupper(substr(PHP_OS,0,5)=='WIN')) {
       $eol="\r\n";
} else if (strtoupper(substr(PHP_OS,0,5)=='MAC')) {
       $eol="\r";
} else {
       $eol="\n";
}
[End Code]

Does this suffice or should I be using the php supplied end of line?

$eol=PHP_EOL;

Or do these do the same thing?
What advantages over the code I use does the PHP_EOL have?
Or does it not matter with these and either are good to go?

It seems to me that they do the same thing.. am I on the right track or
missing something?
Is there any other OS's that are not WIN or MAC and use the "\r" or "\r\n" ?
If their are, then I can see an advantage of using the PHP_EOL.

Like I said, just a quick question. ;)


Karl DeSaulniers
Design Drumm
http://designdrumm.com




Oops sory for the cross post. Didn't realize that's what that was.
I have seen others do it in the past.
I am a bit of a list novice.
Wont happen again.
Thanks for your reply.


Karl DeSaulniers
Design Drumm
http://designdrumm.com


--- End Message ---
--- Begin Message ---
On Sat, Jul 2, 2011 at 9:01 AM, Karl DeSaulniers <k...@designdrumm.com>wrote:

> Hello All,
> Happy pre independence for my American PHPers. And good health to all
> others.
> Have a quick question..
>
> I have this code I use for the end of line characters used in my mailers.
>
> [Code]
> // Is the OS Windows or Mac or Linux
> if (strtoupper(substr(PHP_OS,0,5)**=='WIN')) {
>        $eol="\r\n";
> } else if (strtoupper(substr(PHP_OS,0,5)**=='MAC')) {
>        $eol="\r";
> } else {
>        $eol="\n";
> }
> [End Code]
>
> Does this suffice or should I be using the php supplied end of line?
>
> $eol=PHP_EOL;
>
> Or do these do the same thing?
> What advantages over the code I use does the PHP_EOL have?
> Or does it not matter with these and either are good to go?
>
> It seems to me that they do the same thing.. am I on the right track or
> missing something?
> Is there any other OS's that are not WIN or MAC and use the "\r" or "\r\n"
> ?
> If their are, then I can see an advantage of using the PHP_EOL.
>
> Like I said, just a quick question. ;)
>

When you say "mailers" are you talking about emails? If so then you should
be using "\r\n" at all times since that's what numerous email-related RFCs
specify. If you use anything else then you may find your email gets rejected
by strictly implemented mail servers (rare these days, but it happens).

Incidentally, CR only applies to Mac OS9 and earlier. OSX uses LF due to its
BSD roots. For a near-complete list, see "Representations" here:
http://en.wikipedia.org/wiki/Newline.

-Stuart

-- 
Stuart Dallas
3ft9 Ltd
http://3ft9.com/

--- End Message ---
--- Begin Message ---
hi all,
looking at the code Karl has posted, this code bit is not going to be
a help in setting the 'new line' character in an email body, because
it decides based on the server operating system.

 if (strtoupper(substr(PHP_OS,0,5)**=='WIN')) {
>        $eol="\r\n";

when sending out emails, the most compatible way is to use "\r\n" as
Stuart has pointed out (plain text emails).


~viraj


On Sat, Jul 2, 2011 at 7:15 PM, Stuart Dallas <stu...@3ft9.com> wrote:
> On Sat, Jul 2, 2011 at 9:01 AM, Karl DeSaulniers <k...@designdrumm.com>wrote:
>
>> Hello All,
>> Happy pre independence for my American PHPers. And good health to all
>> others.
>> Have a quick question..
>>
>> I have this code I use for the end of line characters used in my mailers.
>>
>> [Code]
>> // Is the OS Windows or Mac or Linux
>> if (strtoupper(substr(PHP_OS,0,5)**=='WIN')) {
>>        $eol="\r\n";
>> } else if (strtoupper(substr(PHP_OS,0,5)**=='MAC')) {
>>        $eol="\r";
>> } else {
>>        $eol="\n";
>> }
>> [End Code]
>>
>> Does this suffice or should I be using the php supplied end of line?
>>
>> $eol=PHP_EOL;
>>
>> Or do these do the same thing?
>> What advantages over the code I use does the PHP_EOL have?
>> Or does it not matter with these and either are good to go?
>>
>> It seems to me that they do the same thing.. am I on the right track or
>> missing something?
>> Is there any other OS's that are not WIN or MAC and use the "\r" or "\r\n"
>> ?
>> If their are, then I can see an advantage of using the PHP_EOL.
>>
>> Like I said, just a quick question. ;)
>>
>
> When you say "mailers" are you talking about emails? If so then you should
> be using "\r\n" at all times since that's what numerous email-related RFCs
> specify. If you use anything else then you may find your email gets rejected
> by strictly implemented mail servers (rare these days, but it happens).
>
> Incidentally, CR only applies to Mac OS9 and earlier. OSX uses LF due to its
> BSD roots. For a near-complete list, see "Representations" here:
> http://en.wikipedia.org/wiki/Newline.
>
> -Stuart
>
> --
> Stuart Dallas
> 3ft9 Ltd
> http://3ft9.com/
>

--- End Message ---
--- Begin Message ---

On Jul 2, 2011, at 3:01 AM, Karl DeSaulniers wrote:

Hello All,
Happy pre independence for my American PHPers. And good health to all others.
Have a quick question..

I have this code I use for the end of line characters used in my mailers.

[Code]
// Is the OS Windows or Mac or Linux
if (strtoupper(substr(PHP_OS,0,5)=='WIN')) {
        $eol="\r\n";
} else if (strtoupper(substr(PHP_OS,0,5)=='MAC')) {
        $eol="\r";
} else {
        $eol="\n";
}
[End Code]

Does this suffice or should I be using the php supplied end of line?

$eol=PHP_EOL;

Or do these do the same thing?
What advantages over the code I use does the PHP_EOL have?
Or does it not matter with these and either are good to go?

It seems to me that they do the same thing.. am I on the right track or missing something? Is there any other OS's that are not WIN or MAC and use the "\r" or "\r\n" ?
If their are, then I can see an advantage of using the PHP_EOL.

Like I said, just a quick question. ;)


Karl DeSaulniers
Design Drumm
http://designdrumm.com


What's interesting is that the SMTP standard actually requires a CRLF, even in unix-land, so PHP_EOL may not work as intended if you're using it there.

From RFC-2821:

        2.3.7 Lines

        SMTP commands and, unless altered by a service
extension, message data, are transmitted in "lines". Lines consist of zero or more data characters terminated by the sequence ASCII
        character "CR" (hex value 0D) followed immediately by ASCII
character "LF" (hex value 0A). This termination sequence is denoted
        as <CRLF> in this document. Conforming implementations MUST NOT
        recognize or generate any other character or character sequence
        as a line terminator. Limits MAY be imposed on line lengths by
        servers (see section 4.5.3).

        In addition, the appearance of
"bare" "CR" or "LF" characters in text (i.e., either without the other) has a long history of causing problems in mail implementations and applications that use the mail system as a tool. SMTP client
        implementations MUST NOT transmit these characters except when
they are intended as line terminators and then MUST, as indicated
        above, transmit them only as a <CRLF> sequence.

The old sendmail operated this way. I believe more modern MTAs handle either CRLF, CR, or LF terminated lines on input, so in practice it may not matter.

Also, as of OSX, Mac uses LF as the line terminator character, not CR, although I think it will handle either as a backwards compatibility feature. Elsewhere, such as in browser output, PHP_EOL is the best bet to cause a line termination outside of mail applications.

In actual practice, however, PHP_EOL may be less useful than it would appear, as it only provides the appropriate line terminator based on the host it is running on. If your server is running a flavour of unix, and your running on windows, for example, the server will output '\n' to your browser, not '\r\n' as Windows would like. I believe all the modern browsers, regardless of platform OS, handle all three CRLF, CR, and LF and treat them as line terminators. However if you dump the return from the server to a file, you won't see this behaviour, obviously.

There's a pretty long thread on this at stackoverflow.com: 
http://stackoverflow.com/questions/128560/when-do-i-use-the-php-constant-php-eol

I tend to use PHP_EOL inplace of specifying a "\n" character string because to me it is clearer and more obvious what I mean, and does make the code at least a bit more portable.


--- End Message ---
--- Begin Message ---
Thanks Stuart!

Karl

Sent from losPhone

On Jul 2, 2011, at 8:45 AM, Stuart Dallas <stu...@3ft9.com> wrote:

On Sat, Jul 2, 2011 at 9:01 AM, Karl DeSaulniers <k...@designdrumm.com>wrote:

Hello All,
Happy pre independence for my American PHPers. And good health to all
others.
Have a quick question..

I have this code I use for the end of line characters used in my mailers.

[Code]
// Is the OS Windows or Mac or Linux
if (strtoupper(substr(PHP_OS,0,5)**=='WIN')) {
      $eol="\r\n";
} else if (strtoupper(substr(PHP_OS,0,5)**=='MAC')) {
      $eol="\r";
} else {
      $eol="\n";
}
[End Code]

Does this suffice or should I be using the php supplied end of line?

$eol=PHP_EOL;

Or do these do the same thing?
What advantages over the code I use does the PHP_EOL have?
Or does it not matter with these and either are good to go?

It seems to me that they do the same thing.. am I on the right track or
missing something?
Is there any other OS's that are not WIN or MAC and use the "\r" or "\r\n"
?
If their are, then I can see an advantage of using the PHP_EOL.

Like I said, just a quick question. ;)


When you say "mailers" are you talking about emails? If so then you should be using "\r\n" at all times since that's what numerous email- related RFCs specify. If you use anything else then you may find your email gets rejected by strictly implemented mail servers (rare these days, but it happens).

Incidentally, CR only applies to Mac OS9 and earlier. OSX uses LF due to its
BSD roots. For a near-complete list, see "Representations" here:
http://en.wikipedia.org/wiki/Newline.

-Stuart

--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/

--- End Message ---

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