Help! Editing a TXT file.

Anon

I know what I need to do but I can't figure out what functions I need.

Here we go! A summary of what I want to do.

I have a text file, there are 15 lines.

ex.
1
2
3
4
5

Wehn info is received from user I want line appropriate line changed without losing any data.

That's the summary.

Ok, I figured out what I need to do is, if I need to change line 3 I find the file pointer for line 3 then get the contents of the file upto the file pointer then copy that to a file, fopen with "a" option. then I add new info. then I get file pointer for line 4 and get contents to end of file. (EOF) and append that to my tmp file. Then I copy that over the file I was reading from.

I know of fopen, fwrite, fclose.
I need to know how to find the file pointer, copy upto that file pointer.
I did find a function that copies from file pointer to end of file but I forget so that would help too.

Thanks in Advance.

Anon

This is what worked for me (with MUCH frustration before figguring this out):

$list = "/usr/home/dir/file.txt";
$oldword = "3";
$results = file($list);
$newword = "";
while (list(,$path) = each($results)){
$parts = explode(':', $path);
$path = $parts[0];
$fp = fopen("$list", 'r');
if ($fp){
$data = fread($fp, filesize($list));
fclose($fp);
$newdata = str_replace($oldword, $newword, $data);
$fp = fopen($list, 'w');
if ($fp){
fwrite($fp, $newdata);
fclose($fp);
}
}
}

This will erase the 3 in the file, if you want to replace it then put the replacement value in $newword.

Anon

Thanks for the help! I ended up doing it a little different but I used the list and each thing you put in your example, verry helpful.

What I did is
Summary of this is. Receive values from a form. Load current file in array. (each line has 4 sections seperated by "|")
Then took eack line looking at the first section to see if it was the same as the name, if it was then copy the other section over top of the current sections. Implode array to a string then write to tmp file. (replace old data with new but keep other info.)
Once done I copied tmp file over top of current file. Then erased tmp file.

<?php

GLOBAL $NAME;
GLOBAL $PASSWORD;
GLOBAL $WHEN;
GLOBAL $WHERE;
GLOBAL $WHAT;
if ($PASSWORD == "ptl"){
//break each line into an array
$file = file("bic.txt");

$newfile = fopen("test.txt",'w+');
$i = 0;
//copy the first element into this array and increment array pointer by one.
while (list(,$i) = each($file))

{ $parts = explode("|",$i);
if ($parts[0] == $NAME)
{$parts[1] = $WHEN;
$parts[2] = $WHERE;
$parts[3] = $WHAT;}
$parts = implode("|",$parts);
fwrite($newfile,$parts);

}
fclose($newfile);
copy("test.txt","bic.txt");
$EraseAll = fopen("test.txt",'w');
fwrite($EraseAll,"");
fclose($EraseAll);}
?>

Anon

Thanks for the help! I ended up doing it a little different but I used the list and each thing you put in your example, verry helpful.

<?php

GLOBAL $NAME;
GLOBAL $PASSWORD;
GLOBAL $WHEN;
GLOBAL $WHERE;
GLOBAL $WHAT;
if ($PASSWORD == "ptl"){
//break each line into an array
$file = file("bic.txt");

$newfile = fopen("test.txt",'w+');
$i = 0;
//copy the first element into this array and increment array pointer by one.
while (list(,$i) = each($file))

{ $parts = explode("|",$i);
if ($parts[0] == $NAME)
{$parts[1] = $WHEN;
$parts[2] = $WHERE;
$parts[3] = $WHAT;}
$parts = implode("|",$parts);
fwrite($newfile,$parts);

}
fclose($newfile);
copy("test.txt","bic.txt");
$EraseAll = fopen("test.txt",'w');
fwrite($EraseAll,"");
fclose($EraseAll);}
?>

Anon

what s/w prog compler is req.
even

I need to write a small prog which

reads a txt file
find & replace certain no. by XXXXX
results into another txt file

can u pl. help/guide.
Amrit