Re: [PHP] Comma question
On Mon, 22 Jul 2002, B i g D o g wrote:
> I figured that the comma was to concatenate but is was wondering if the
> parser handled it different.
The comma isn't actually for concatenation. The net effect is the same in
this case, but a very different thing is happening.
echo "hello " , "there";
Here 'echo' is printing two separate arguments. First it is printing
"hello " and then it is printing "there".
echo "hello " . "there";
Here the strings are concatenated to form a single string ("hello there")
and then this is processed by echo which prints it out.
The effects are the same, as I said, but it's important to realize why
they're very different ways of getting that effect.
miguel
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Re: [PHP] Comma question
on 23/07/02 8:34 AM, B i g D o g ([EMAIL PROTECTED]) wrote:
> What does the "," and "{}" do in this type of statement?
>
> Example: echo "{$strName}", htmlspecialchars( $teststr );
Not sure about the comma, but the {braces} are easy. They help separate the
$vars from other stuff in the string.
Example:
It's a good habbit to get into, and has saved my arse on a few occasions,
although the above example isn't a good one.
Justin
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RE: [PHP] Comma question
I remember from a previous post, the dot operator will create a temporary
string in memory, and then echo that out. The comma operator will just
output as it goes - ie. it doesn't create a temporary string.
As for Lee Doolan's reply:
echo "{$obj->strName[$i]}";
interesting - never thought of doing that, I alway's broke out of the quotes
to do object dereferencing. Should make my future code more readable I
think...
Martin
-Original Message-
From: B i g D o g [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, July 23, 2002 9:06 AM
To: PHP GEN
Subject: Re: [PHP] Comma question
Thanks all for the info...
I figured that the comma was to concatenate but is was wondering if the
parser handled it different.
I knew the {} helped the parser now which was the variable...but i have
never seen it like that...
I have only seen it like ${var}...
Just wondering the difference...
.: B i g D o G :.
- Original Message -
From: "Kevin Stone" <[EMAIL PROTECTED]>
To: "B i g D o g" <[EMAIL PROTECTED]>; "PHP GEN"
<[EMAIL PROTECTED]>
Sent: Monday, July 22, 2002 5:00 PM
Subject: Re: [PHP] Comma question
> Curly braces {} are sometimes required for PHP to properly parse variables
> within quoted strings. Good example might be defining variable-variables
> within a quoted string "${$myvarvar}". However I do not believe that
curly
> braces are required in this particular string.
>
> As for the comma I believe it does the same thing as the period. It will
> concatonate the quoted string with the output of the htmlspecialchars()
> function within the echo statement.
>
> -Kevin
>
> - Original Message -
> From: "B i g D o g" <[EMAIL PROTECTED]>
> To: "PHP GEN" <[EMAIL PROTECTED]>
> Sent: Monday, July 22, 2002 4:34 PM
> Subject: [PHP] Comma question
>
>
> > Tried to check the archive, but it is offline...
> >
> >
> > What does the "," and "{}" do in this type of statement?
> >
> > Example: echo "{$strName}", htmlspecialchars(
> $teststr );
> >
> > Thanks,
> >
> >
> > .: B i g D o g :.
> >
> >
> >
> > --
> > PHP General Mailing List (http://www.php.net/)
> > To unsubscribe, visit: http://www.php.net/unsub.php
> >
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Re: [PHP] Comma question
Thanks all for the info...
I figured that the comma was to concatenate but is was wondering if the
parser handled it different.
I knew the {} helped the parser now which was the variable...but i have
never seen it like that...
I have only seen it like ${var}...
Just wondering the difference...
.: B i g D o G :.
- Original Message -
From: "Kevin Stone" <[EMAIL PROTECTED]>
To: "B i g D o g" <[EMAIL PROTECTED]>; "PHP GEN"
<[EMAIL PROTECTED]>
Sent: Monday, July 22, 2002 5:00 PM
Subject: Re: [PHP] Comma question
> Curly braces {} are sometimes required for PHP to properly parse variables
> within quoted strings. Good example might be defining variable-variables
> within a quoted string "${$myvarvar}". However I do not believe that
curly
> braces are required in this particular string.
>
> As for the comma I believe it does the same thing as the period. It will
> concatonate the quoted string with the output of the htmlspecialchars()
> function within the echo statement.
>
> -Kevin
>
> - Original Message -
> From: "B i g D o g" <[EMAIL PROTECTED]>
> To: "PHP GEN" <[EMAIL PROTECTED]>
> Sent: Monday, July 22, 2002 4:34 PM
> Subject: [PHP] Comma question
>
>
> > Tried to check the archive, but it is offline...
> >
> >
> > What does the "," and "{}" do in this type of statement?
> >
> > Example: echo "{$strName}", htmlspecialchars(
> $teststr );
> >
> > Thanks,
> >
> >
> > .: B i g D o g :.
> >
> >
> >
> > --
> > PHP General Mailing List (http://www.php.net/)
> > To unsubscribe, visit: http://www.php.net/unsub.php
> >
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RE: [PHP] Comma question
I think someone working on learning php after learning C was a little
too printf() happy :)
-Original Message-
From: B i g D o g [mailto:[EMAIL PROTECTED]]
Sent: Monday, July 22, 2002 3:34 PM
To: PHP GEN
Subject: [PHP] Comma question
Tried to check the archive, but it is offline...
What does the "," and "{}" do in this type of statement?
Example: echo "{$strName}", htmlspecialchars(
$teststr );
Thanks,
.: B i g D o g :.
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Re: [PHP] Comma question
Curly braces {} are sometimes required for PHP to properly parse variables
within quoted strings. Good example might be defining variable-variables
within a quoted string "${$myvarvar}". However I do not believe that curly
braces are required in this particular string.
As for the comma I believe it does the same thing as the period. It will
concatonate the quoted string with the output of the htmlspecialchars()
function within the echo statement.
-Kevin
- Original Message -
From: "B i g D o g" <[EMAIL PROTECTED]>
To: "PHP GEN" <[EMAIL PROTECTED]>
Sent: Monday, July 22, 2002 4:34 PM
Subject: [PHP] Comma question
> Tried to check the archive, but it is offline...
>
>
> What does the "," and "{}" do in this type of statement?
>
> Example: echo "{$strName}", htmlspecialchars(
$teststr );
>
> Thanks,
>
>
> .: B i g D o g :.
>
>
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
>
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Re: [PHP] Comma question
The comma just concatenates the two. The brackets don't seem to do much of anything... echo "$strName".htmlspecialchars( $teststr ); seems to be the same... PS sorry to everyone who got an eMail with a screwed up time- I forgot to fix the clock after i re-installed winblows (dual-boot) -- If you pick up a starving dog and make him prosperous, he will not bite you; that is the principal difference between a dog and a man. Samuel Clemens -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
