read line from text file

[lucas]

I have a text file that i would like to use PHP to read from. each line
ends with a \n. i need to read from the beginning of the line, only upto
that \n
right now i'm using this, which is sloppy and slow:

if ($chr = fgetc($file)) != "\n") { }

which of course reads in one byte at a time till the end of line. is there
a better way?
--
lucas
-------------------------
Perl Coder since 2001
shift || die;
-------------------------

[nc@iname.com]

Re: read line from text file

lucas wrote:[color=blue]
>
> I have a text file that i would like to use PHP to read from. each[/color]
line[color=blue]
> ends with a \n. i need to read from the beginning of the line, only[/color]
upto[color=blue]
> that \n
> right now i'm using this, which is sloppy and slow:
>
> if ($chr = fgetc($file)) != "\n") { }
>
> which of course reads in one byte at a time till the end of line. is[/color]
there[color=blue]
> a better way?[/color]
Yes; read up on fgets():

http://www.php.net/fgets

Cheers,
NC

[Pedro Graca]

Re: read line from text file

nc@iname.com wrote:[color=blue]
> lucas wrote:[color=green]
>> if ($chr = fgetc($file)) != "\n") { }[/color][/color]
[color=blue]
> http://www.php.net/fgets[/color]

If you need to process all lines in the file (and the file isn't
extraordinarily big) also consider

http://www.php.net/file

http://www.php.net/file_get_contents (for PHP >= 4.3.0)

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[lucas]

Re: read line from text file

nc@iname.com wrote:

[color=blue]
> Yes; read up on fgets():[/color]

Thanks. I read about that one before, but the manual says you need to
specify x amount of bytes, after you mentioned it, i checked it closer, and
the size was optional. thanks much. sped up my script from 12 secs
to .5 ;)
--
lucas
-------------------------
Perl Coder since 2001
shift || die;
-------------------------

[jblanch]

Re: read line from text file

you could also read the entire file into one string, then use explode()
and the \n delimiter. Its very low-level and childish, but works
effectivly and is easy to understand and work with..

Ex:
$filename = "yourfile.t xt";
$handle = fopen($filename , "r");
$contents = fread($handle, filesize($filen ame));
fclose($handle) ;

$lines = explode("\n",$l ines);
foreach($lines as $line){
// line is stored in $line
}

[Daniel Tryba]

Re: read line from text file

jblanch <jblanch@gmail. com> wrote:[color=blue]
> $filename = "yourfile.t xt";
> $handle = fopen($filename , "r");
> $contents = fread($handle, filesize($filen ame));
> fclose($handle) ;
>
> $lines = explode("\n",$l ines);
> foreach($lines as $line){
> // line is stored in $line
> }[/color]

Never heard of file()?

[jblanch]

Re: read line from text file

hm, guess file works too eh? but its the same idea, just without the
fopen/ect functions.

[Daniel Tryba]

Re: read line from text file

jblanch <jblanch@gmail. com> wrote:[color=blue]
> hm, guess file works too eh? but its the same idea, just without the
> fopen/ect functions.[/color]

file() works for any textfile, you example is only for unix type of
files. DOS type will have \r cluttering the end of lines. Mac files will
appear to contain 1 single line.

You could fix it by using preg_split("/(\r\n|\r|\n)/",$line) instead of
explode("\n",$l ine).

BTW is it really so hard to keep some context in your postings?

[jblanch]

Re: read line from text file


Daniel Tryba wrote:[color=blue]
> jblanch <jblanch@gmail. com> wrote:[color=green]
> > hm, guess file works too eh? but its the same idea, just without[/color][/color]
the[color=blue][color=green]
> > fopen/ect functions.[/color]
>
> file() works for any textfile, you example is only for unix type of
> files. DOS type will have \r cluttering the end of lines. Mac files[/color]
will[color=blue]
> appear to contain 1 single line.
>
> You could fix it by using preg_split("/(\r\n|\r|\n)/",$line) instead[/color]
of[color=blue]
> explode("\n",$l ine).
>
> BTW is it really so hard to keep some context in your postings?[/color]

I'm sorry, but correct me if i'm wrong, but didn't he state that he
needs to read to \n? yes, i'm sure he did. there is nothing wrong
with the method i described, and i'm 100% sure it would work for him.
Hows that for context?