Read from file into array

[Matthew Sims]

I see what my problem is but not sure what I need to change. I'm
reading a single number from a file that's fed into an array but the
array doesn't want to print out its output.

$oncall=array() ;

$oncall[1]="msims";
$oncall[2]="dtilbury";
$oncall[3]="jma";
$oncall[4]="jweaver";
$oncall[5]="cirwin";
$filename="onca ll/.oncall";

$n=file_get_con tents($filename );

echo "$oncall[$n]";

This prints nothing.
But when I comment out the file_get_conten ts and simply do $n="2" the
array prints out dtilbury like it should. My guess is the error lies
in how $n is being assigned from the file_get_conten ts. Any thoughts?

Much appreciation!

--Matt

[Andy Hassall]

Re: Read from file into array

On 6 Aug 2003 15:33:17 -0700, matt@killermook ie.org (Matthew Sims) wrote:
[color=blue]
>I see what my problem is but not sure what I need to change. I'm
>reading a single number from a file that's fed into an array but the
>array doesn't want to print out its output.
>
>$oncall=array( );
>
>$oncall[1]="msims";
>$oncall[2]="dtilbury";
>$oncall[3]="jma";
>$oncall[4]="jweaver";
>$oncall[5]="cirwin";
>$filename="onc all/.oncall";
>
>$n=file_get_co ntents($filenam e);
>
>echo "$oncall[$n]";
>
>This prints nothing.
>But when I comment out the file_get_conten ts and simply do $n="2" the
>array prints out dtilbury like it should. My guess is the error lies
>in how $n is being assigned from the file_get_conten ts. Any thoughts?[/color]

Print out $n using var_dump or print_r. Does it contain a newline at the end?

--
Andy Hassall (andy@andyh.co. uk) icq(5747695) (http://www.andyh.co.uk)
Space: disk usage analysis tool (http://www.andyhsoftware.co.uk/space)

[James Jiao]

Re: Read from file into array

Hi, Matt

An easier way to check whether the returned value contains a carriage return
is to run this after $n=file_get_con tents($filename ):

echo "$n is this on the same line?";

If the string after $n wraps to a new line, then there is something wrong
with the return type. If $n does not print out anything at all, then either
the file get function is at fault or the $filename variable.

Hope this helps

==James==



"Matthew Sims" <matt@killermoo kie.org> wrote in message
news:1e963607.0 308061433.766dc 97f@posting.goo gle.com...[color=blue]
> I see what my problem is but not sure what I need to change. I'm
> reading a single number from a file that's fed into an array but the
> array doesn't want to print out its output.
>
> $oncall=array() ;
>
> $oncall[1]="msims";
> $oncall[2]="dtilbury";
> $oncall[3]="jma";
> $oncall[4]="jweaver";
> $oncall[5]="cirwin";
> $filename="onca ll/.oncall";
>
> $n=file_get_con tents($filename );
>
> echo "$oncall[$n]";
>
> This prints nothing.
> But when I comment out the file_get_conten ts and simply do $n="2" the
> array prints out dtilbury like it should. My guess is the error lies
> in how $n is being assigned from the file_get_conten ts. Any thoughts?
>
> Much appreciation!
>
> --Matt[/color]

[Matthew Sims]

Re: Read from file into array

"James Jiao" <jamesjiao@para dise.net.nz> wrote in message news:<rigYa.965 8$9f7.1148199@n ews02.tsnz.net> ...[color=blue]
> Hi, Matt
>
> An easier way to check whether the returned value contains a carriage return
> is to run this after $n=file_get_con tents($filename ):
>
> echo "$n is this on the same line?";
>
> If the string after $n wraps to a new line, then there is something wrong
> with the return type. If $n does not print out anything at all, then either
> the file get function is at fault or the $filename variable.
>
> Hope this helps
>
> ==James==
>
>
>
> "Matthew Sims" <matt@killermoo kie.org> wrote in message
> news:1e963607.0 308061433.766dc 97f@posting.goo gle.com...[color=green]
> > I see what my problem is but not sure what I need to change. I'm
> > reading a single number from a file that's fed into an array but the
> > array doesn't want to print out its output.
> >
> > $oncall=array() ;
> >
> > $oncall[1]="msims";
> > $oncall[2]="dtilbury";
> > $oncall[3]="jma";
> > $oncall[4]="jweaver";
> > $oncall[5]="cirwin";
> > $filename="onca ll/.oncall";
> >
> > $n=file_get_con tents($filename );
> >
> > echo "$oncall[$n]";
> >
> > This prints nothing.
> > But when I comment out the file_get_conten ts and simply do $n="2" the
> > array prints out dtilbury like it should. My guess is the error lies
> > in how $n is being assigned from the file_get_conten ts. Any thoughts?
> >
> > Much appreciation!
> >
> > --Matt[/color][/color]


Thanks for the response. I did both tests to see what $n looks like.

I did var_dump ($n) with this output:
string(2) "2 "
Is that really a space after the 2? There's no space inside the file
being read.

I did print_r ($n) with this output:
2
Can't tell if that space is there

And I also did echo "$n is this on the same line"; with this output:
2 is this on the same line
Doesn't look like the space is there

It seems $n is being assigned properly. But when I stick $n into the
$oncall array it still prints out nothing.

echo "$oncall[$n]";
Prints nothing.

[Matthew Sims]

Re: Read from file into array

"James Jiao" <jamesjiao@para dise.net.nz> wrote in message news:<rigYa.965 8$9f7.1148199@n ews02.tsnz.net> ...[color=blue]
> Hi, Matt
>
> An easier way to check whether the returned value contains a carriage return
> is to run this after $n=file_get_con tents($filename ):
>
> echo "$n is this on the same line?";
>
> If the string after $n wraps to a new line, then there is something wrong
> with the return type. If $n does not print out anything at all, then either
> the file get function is at fault or the $filename variable.
>
> Hope this helps
>
> ==James==
>
>
>
> "Matthew Sims" <matt@killermoo kie.org> wrote in message
> news:1e963607.0 308061433.766dc 97f@posting.goo gle.com...[color=green]
> > I see what my problem is but not sure what I need to change. I'm
> > reading a single number from a file that's fed into an array but the
> > array doesn't want to print out its output.
> >
> > $oncall=array() ;
> >
> > $oncall[1]="msims";
> > $oncall[2]="dtilbury";
> > $oncall[3]="jma";
> > $oncall[4]="jweaver";
> > $oncall[5]="cirwin";
> > $filename="onca ll/.oncall";
> >
> > $n=file_get_con tents($filename );
> >
> > echo "$oncall[$n]";
> >
> > This prints nothing.
> > But when I comment out the file_get_conten ts and simply do $n="2" the
> > array prints out dtilbury like it should. My guess is the error lies
> > in how $n is being assigned from the file_get_conten ts. Any thoughts?
> >
> > Much appreciation!
> >
> > --Matt[/color][/color]


In addition to performing the tests stated above, I also tried the following:

$fp=fopen($file name,"r");
$n=fread($fp, 2);
fclose($fp);

Same results, no change.

[David Robley]

Re: Read from file into array

In article <1e963607.03080 70855.668f0d60@ posting.google. com>,
matt@killermook ie.org says...[color=blue]
> I got it to work!!
>
> After posting my last reply here I tried one more adjustment:
>
> $fp=fopen($file name,"r");
> $n=fread($fp, 1);
> fclose($fp);
>
> And now the whole process works.
>
> For some reason, when reading the number from the file it always
> placed a space at the end of the number despite the fact that there is
> no space after the number in the file.
>
> Thanks to those that opened up my troubleshooting more.[/color]

As has previously been suggested, the extra character is a newline, not a
space. It will appear as a space if you view it in output in a browser,
but if you do a view source on a document containing it you'll see it as a
newline.

Cheers
--
Quod subigo farinam

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