Re: [PHP] file_exists() question
what does $annrow[id] return?
I HAVE found that I have to refer to a file when using file_exists() from /
so
file_exists(/path/to/me/cherpdocs/filename.doc)
for it to work right.
Jim
- Original Message -
From: Charles Kline [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, March 08, 2003 1:10 PM
Subject: [PHP] file_exists() question
Can anyone tell me why this code does not return true when the file in
the directory cherpdocs/ with the file (which I see as being there)
does exist?
if(file_exists('cherpdocs/$annrow[id].doc')){
echo br /a href=\cherpdocs/$annrow[id].doc\Funding
details paper/a;
}
This is a path relative to the file calling it, should it be otherwise?
Thanks
Charles
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Re: [PHP] file_exists() question
because you can't directly use the $annrow[id] within single quotes, you
should use double quotes to do so.
file_exists(cherpdocs/$annrow[id].doc)
or
file_exists('cherpdocs/'.$annrow[id].'.doc')
or
file_exists(cherpdocs/.$annrow[id]..doc)
Note: i heared it's prefered to always use the . when including variables
within strings.
Regards,
Khalid Al-Kary
http://creaturesx.ma.cx/kxparse/
Can anyone tell me why this code does not return true when the file in the
directory cherpdocs/ with the file (which I see as being there) does exist?
if(file_exists('cherpdocs/$annrow[id].doc')){
echo br /a href=\cherpdocs/$annrow[id].doc\Funding details
paper/a;
}
This is a path relative to the file calling it, should it be otherwise?
Thanks
Charles
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Re: [PHP] file_exists() question
You will probably need to use
file_exists(cherpdocs/{$annrow['id']}.doc) you could also use
file_exists('cherpdocs/' . $annrow['id'] . '.doc')
You should use single quotes to identify your element in an array,
otherwise PHP will try to use it as a constant first.
Jason
On Sat, 2003-03-08 at 14:40, Khalid El-Kary wrote:
because you can't directly use the $annrow[id] within single quotes, you
should use double quotes to do so.
file_exists(cherpdocs/$annrow[id].doc)
or
file_exists('cherpdocs/'.$annrow[id].'.doc')
or
file_exists(cherpdocs/.$annrow[id]..doc)
Note: i heared it's prefered to always use the . when including variables
within strings.
Regards,
Khalid Al-Kary
http://creaturesx.ma.cx/kxparse/
Can anyone tell me why this code does not return true when the file in the
directory cherpdocs/ with the file (which I see as being there) does exist?
if(file_exists('cherpdocs/$annrow[id].doc')){
echo br /a href=\cherpdocs/$annrow[id].doc\Funding details
paper/a;
}
This is a path relative to the file calling it, should it be otherwise?
Thanks
Charles
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Jason Sheets [EMAIL PROTECTED]
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Re: [PHP] file_exists() question
At 22:40 08.03.2003, Khalid El-Kary said:
[snip]
because you can't directly use the $annrow[id] within single quotes, you
should use double quotes to do so.
file_exists(cherpdocs/$annrow[id].doc)
or
file_exists('cherpdocs/'.$annrow[id].'.doc')
or
file_exists(cherpdocs/.$annrow[id]..doc)
Note: i heared it's prefered to always use the . when including variables
within strings.
[snip]
Hmm - that's a bit different.
1) You can't use variables in singlequoted strings - these don't get parsed
by PHP.
2) You can absolutely use variables in doublequoted strings as these do get
parsed.
3) Array indices and object references must be enclosed in curly brackets
when used within double quotes to tell PHP what the variable and what the
string text is.
Example:
cherpdocs/$annrow[id].doc == doesn't work correctly
cherpdocs/{$annrow['id']}.doc == will work
cherpdocs/$object-docname.doc == will not work
cherpdocs/{$object-docname}.doc == will work
Note that you should quote non-numeric array indices to allow PHP to
recognize it's not a defined value. Omitting quotes for index data would
trigger a warning (something like 'using unknown identifier id, assuming
id').
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Re: [PHP] file_exists() question
on 09/03/03 8:10 AM, Charles Kline ([EMAIL PROTECTED]) wrote:
if(file_exists('cherpdocs/$annrow[id].doc')){
echo br /a href=\cherpdocs/$annrow[id].doc\Funding
details paper/a;
}
This is a pretty simple debugging type query, so:
First things first, make sure that $annrow[id] is what you expect, by
echoing it to the screen.
?
echo $annrow[id] . br /;
?
Then your file_exists() line has to use double quotes, because you're using
a variable:
file_exists(cherpdocs/$annrow[id].doc)
Or better still, clarify exactly what you want by using {braces} or .'s
file_exists(cherpdocs/{$annrow[id]}.doc)
Or:
file_exists(cherpdocs/ . $annrow[id] . .doc)
Same applies to your echo line.
Summary, I think you can save yourself a little grief by making the
following changes to your code. Personally, I prefer wrapping all vars in
{braces} if inside a string. It also includes some minor debugging code, so
that you can hunt down the issue.
?
$file = cherpdocs/{$annrow[id]}.doc
if(file_exists($file)) {
echo br /a href=\{$file}\Funding details paper/a;
} else {
echo The file {$file} did not exist;
}
?
Justin
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