I am trying to find the documentation on how and why "id" is quoted in
the first example, but not in the second.

..............elseif($_GET['id'] == 'pro')............

.............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
$_GET[id]&key=$_GET[key]";............

I found this, but it doesnt really tell me why the first id HAS to
have single qoutes and the second CAN'T:
When a string is specified in double quotes or with heredoc, variables
are parsed within it.

I'm just looking for the official explanation.
Thanks
Mike

Mike wrote:
> I am trying to find the documentation on how and why "id" is quoted in
> the first example, but not in the second.
>
> .............elseif($_GET['id'] == 'pro')............
>
> ............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
> $_GET[id]&key=$_GET[key]";............
>
> I found this, but it doesnt really tell me why the first id HAS to
> have single qoutes and the second CAN'T:
> When a string is specified in double quotes or with heredoc, variables
> are parsed within it.
>
> I'm just looking for the official explanation.
> Thanks
> Mike
>

The second instance is incorrect and should produce an E_NOTICE.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

On Dec 12, 9:29 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> Mike wrote:
> > I am trying to find the documentation on how and why "id" is quoted in
> > the first example, but not in the second.
>
> > .............elseif($_GET['id'] == 'pro')............
>
> > ............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
> > $_GET[id]&key=$_GET[key]";............
>
> > I found this, but it doesnt really tell me why the first id HAS to
> > have single qoutes and the second CAN'T:
> > When a string is specified in double quotes or with heredoc, variables
> > are parsed within it.
>
> > I'm just looking for the official explanation.
> > Thanks
> > Mike
>
> The second instance is incorrect and should produce an E_NOTICE.
>
> --
> ==================
> Remove the "x" from my email address
> Jerry Stuckle
> JDS Computer Training Corp.
> jstuck...@attglobal.net
> ==================- Hide quoted text -
>
> - Show quoted text -

No, it doesnt, in fact it will only work that way.I'm sure because I
spent hours on it. And I copied it from my working file.

On Dec 12, 9:45 pm, Mike <ampel...@gmail.com> wrote:
> On Dec 12, 9:29 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
>
>
>
>
>
> > Mike wrote:
> > > I am trying to find the documentation on how and why "id" is quoted in
> > > the first example, but not in the second.
>
> > > .............elseif($_GET['id'] == 'pro')............
>
> > > ............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
> > > $_GET[id]&key=$_GET[key]";............
>
> > > I found this, but it doesnt really tell me why the first id HAS to
> > > have single qoutes and the second CAN'T:
> > > When a string is specified in double quotes or with heredoc, variables
> > > are parsed within it.
>
> > > I'm just looking for the official explanation.
> > > Thanks
> > > Mike
>
> > The second instance is incorrect and should produce an E_NOTICE.
>
> > --
> > ==================
> > Remove the "x" from my email address
> > Jerry Stuckle
> > JDS Computer Training Corp.
> > jstuck...@attglobal.net
> > ==================- Hide quoted text -
>
> > - Show quoted text -
>
> No, it doesnt, in fact it will only work that way.I'm sure because I
> spent hours on it. And I copied it from my working file.- Hide quoted text -
>
> - Show quoted text -

To be more specific:
if (isset($_SERVER['QUERY_STRING'])) {
$newquerystring = "http://www.xxxxxx.xxxxxxxx.edu/~xxxxxxx/
app_upd_2.php?id=$_GET[id]&key=$_GET[key]";
$updateGoTo = $newquerystring;
}
header(sprintf("Location: %s", $updateGoTo));
}

Mike wrote:
> I am trying to find the documentation on how and why "id" is quoted in
> the first example, but not in the second.
>
> .............elseif($_GET['id'] == 'pro')............
>
> ............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
> $_GET[id]&key=$_GET[key]";............
>
> I found this, but it doesnt really tell me why the first id HAS to
> have single qoutes and the second CAN'T:
> When a string is specified in double quotes or with heredoc, variables
> are parsed within it.
>
> I'm just looking for the official explanation.
> Thanks
> Mike

When inside double quotes, PHP doesn't look for defined constants so
you don't need to enclose associative array keys in quotes... unless you
bracket them:

--code--

error-reporting(E_ALL); // everyone knows this constant so we'll use it.

$arr['E_ALL'] = 'world'; // array key is 'E_ALL' not E_ALL
echo "Hello $arr[E_ALL].<br>"; // no errors - PHP does not confuse them.

echo "Hello {$arr['E_ALL']}.<br>"; // no errors - PHP does not confuse them.

echo "Hello {$arr[E_ALL]}.<br>"; // now errors - PHP assumes the defined
constant.

echo "Hello ".$arr[E_ALL]."<br>"; // now errors - PHP assumes the
defined constant.

--end code--

In example #1 the array key name is technically already quoted by the
double quotes (in which php scans for variables) so quotes are not
needed.PHP does not look for defined constants while inside double quotes.
In example #2, the array variable has been isolated with brackets
(which tells PHP to resolve the variable as if it were not in double
quotes and so requires quotes around the key name or PHP assumes the
defined constant.
Examples #3 & #4 show the errors that are thrown when quotes are not
used properly.

It's all in the quotes and brackets:

echo "Hello $arr[E_ALL]";
echo "Hello ".$arr['E_ALL'];
echo "Hello {$arr['E_ALL']}";

....all have the same output.

Also to wrap up, you need to use brackets for multi-dimensional
arrays when inside double quotes:

$arr['cars']['chevy'] = 'Corvette';
echo "MY favorite car is the $arr[cars][chevy].<br>";

....will not have the desired output but (php only sees the first
dimension of the array),

echo "MY favorite car is the {$arr['cars']['chevy']}.<br>";

....does.

---
Norm

..oO(Mike)

>I am trying to find the documentation on how and why "id" is quoted in
>the first example, but not in the second.
>
>.............elseif($_GET['id'] == 'pro')............
>
>............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
>$_GET[id]&key=$_GET[key]";............
>
>I found this, but it doesnt really tell me why the first id HAS to
>have single qoutes and the second CAN'T:
>When a string is specified in double quotes or with heredoc, variables
>are parsed within it.
>
>I'm just looking for the official explanation.

It's described in the array type section. See the third example there:

http://www.php.net/manual/en/languag...es.array.donts

Micha

On Dec 12, 11:07 pm, Michael Fesser <neti...@gmx.de> wrote:
> .oO(Mike)
>
> >I am trying to find the documentation on how and why "id" is quoted in
> >the first example, but not in the second.
>
> >.............elseif($_GET['id'] == 'pro')............
>
> >............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
> >$_GET[id]&key=$_GET[key]";............
>
> >I found this, but it doesnt really tell me why the first id HAS to
> >have single qoutes and the second CAN'T:
> >When a string is specified in double quotes or with heredoc, variables
> >are parsed within it.
>
> >I'm just looking for the official explanation.
>
> It's described in the array type section. See the third example there:
>
> http://www.php.net/manual/en/languag...language.types....
>
> Micha

Great !
Thanks
Mike

On Thu, 13 Dec 2007 05:07:24 +0100, Michael Fesser wrote...
>
>.oO(Mike)
>
>>I am trying to find the documentation on how and why "id" is quoted in
>>the first example, but not in the second.
>>
>>.............elseif($_GET['id'] == 'pro')............
>>
>>............."http://www.xxx.xxx.edu/~xxx/app_upd_2.php?id=
>>$_GET[id]&key=$_GET[key]";............
>>
>>I found this, but it doesnt really tell me why the first id HAS to
>>have single qoutes and the second CAN'T:
>>When a string is specified in double quotes or with heredoc, variables
>>are parsed within it.
>>
>>I'm just looking for the official explanation.
>
>It's described in the array type section. See the third example there:
>
>http://www.php.net/manual/en/languag...es.array.donts
>
>Micha


Since I started off learning Perl before PHP, I had gotten into the habit of
quoting any array keys that weren't numeric or a variable. Thanks for the link.

Tom
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