Re: [PHP] Re: Editing files by line
On Fri, Jul 12, 2002 at 12:04:55PM +0530, Lord Loh. wrote:
> int fseek (int fp, int offset [, int whence])
> int ftell (int fp)
> int rewind (int fp)
> These syntaxes might be useful...
> Read more in File System Functions of the PHP Docs.
Unfortunately, if a file is opened for appending via fopen('name', 'a'),
the manual says the data is put at the end of the file regardless of using
fseek().
--Dan
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RE: [PHP] Re: Editing files by line
-Original Message-
From: Analysis & Solutions
Sent: Friday, July 12, 2002 9:57 AM
To: PHP List
Subject: Re: [PHP] Re: Editing files by line
>Unfortunately, if a file is opened for appending via fopen('name', 'a'),
>the manual says the data is put at the end of the file regardless of using
>fseek().
>
> --Dan
I've written a script that edits a specific line in a text file and saves
the changes to the file for that specific line. I've noticed though that I
can't edit the first line in the file, which would be zero in the array
created by the file() function. When I write the edited data back to the
file I am using "w+" as the mode.
Is this related to the array or to the file mode?
-- Onaje Johnston
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Re: [PHP] Re: Editing files by line
On Mon, Jul 15, 2002 at 08:46:14PM -0400, Onaje Johnston wrote: > > I've written a script that edits a specific line in a text file and saves > the changes to the file for that specific line. I've noticed though that I > can't edit the first line in the file Without seeing the script, it'd be hard for us to say. So, post the _relevant parts_ of the script to the list. --Dan -- PHP classes that make web design easier SQL Solution | Layout Solution | Form Solution sqlsolution.info | layoutsolution.info | formsolution.info T H E A N A L Y S I S A N D S O L U T I O N S C O M P A N Y 4015 7 Av #4AJ, Brooklyn NY v: 718-854-0335 f: 718-854-0409 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Re: Editing files by line
-Original Message-
>From: Analysis & Solutions
>Without seeing the script, it'd be hard for us to say. So, post the
>_relevant parts_ of the script to the list.
Here's the code:
I'm sorry, but I couldn't open a file!";
exit;
}
$array = file($file_name);
// this is the stuff we get from the form, we insert it into an array
$input = array ($id, $name, $creator, $myreview, $prefix, $directory,
$sort, $comments);
// note that we add a \n (line break) to the end of the string.
$output_line = implode ($input, "|")."\n";
// Now open the file (get a file pointer)
$output_stream = fopen($file_name, "w+");
$counter = 0;
foreach($array as $key => $line) {
if($counter == $linenumber) {
$line = $output_line;
}
$out[] = chop($line);
$counter++;
}
foreach($out as $key => $line) {
$result=fputs($output_stream, $line."\n");
}
// close the file pointer
fclose($output_stream);
// give feedback
if ($result) {
echo "Data has been sucessfully added.\n";
echo "View updated
record";
}
else {
echo "Uhoh. . . the database didn't like that.";
}
}else{
// Viewing data from file in a form
//to read the file use:
$fp2= fopen("data.txt", "r");
$line_cnt=0;
while ($servinfo=fgets($fp2,1024)){
if ($line_cnt == $line_num){
$right_line = $servinfo;
list($id, $name, $creator, $myreview, $prefix, $directory, $sort,
$comments)= explode("|",$right_line);
break;
}
$line_cnt++;
}
fclose($fp2);
?>
Racestyle data settings:)
Race ID:
Racestyle Name:
Creator:
MyReview:
Race Prefix
Race Directory:
Sort:
>small case
>Upper Case
Comments:
The data.txt file has this format:
5|8|4|2|7|2|ship_names|
2|3|7|2|1|9|ship_names_2L|7
4|3|2|7|5|6|ship_names|3
The default line_num is 0. The other entries - database3.php?line_num=1,
database3.php?line_num=2 etc.
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Re: [PHP] Re: Editing files by line
On Tue, Jul 16, 2002 at 04:25:25PM -0400, Onaje Johnston wrote:
>
> if ($insert && $linenumber) {
But, if $linenumber is 0, this process won't happen. And, that was the
complaint you mentioned up front.
So, you should do an "isset($linenumber)" instead.
--Dan
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RE: [PHP] Re: Editing files by line
-Original Message-
From: Analysis & Solutions
Sent: Tuesday, July 16, 2002 4:40 PM
To: PHP List
Subject: Re: [PHP] Re: Editing files by line
On Tue, Jul 16, 2002 at 04:25:25PM -0400, Onaje Johnston wrote:
>>
>> if ($insert && $linenumber) {
>But, if $linenumber is 0, this process won't happen. And, that was the
>complaint you mentioned up front.
>
>So, you should do an "isset($linenumber)" instead.
>--Dan
Thanks.
It works using "if ($insert && isset($linenumber)) {".
So because the value of linenumber is 0 on the first line, the if statement
was evaluating to false and therefore the update wouldn't occur, correct?
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Re: [PHP] Re: Editing files by line
On Tue, Jul 16, 2002 at 06:38:04PM -0400, Onaje Johnston wrote:
>
> It works using "if ($insert && isset($linenumber)) {".
>
> So because the value of linenumber is 0 on the first line, the if statement
> was evaluating to false and therefore the update wouldn't occur, correct?
Exactly. If statements need something that's not '' or 0 in order to
evaluate as positive.
--Dan
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