Inserting text into an existing file (at a specified line).

[shoonya]

suppose i want to write on the 5th line of any file then how to implement this in php??

shoonya

[Purple]

Hi,

did you take a look at php.net ? try fopen

Purple

[shoonya]

Hi,

did you take a look at php.net ? try fopen

Purple

fopen is for opening the file
i am talking about writing on any given line
(read the question first)

shoonya

[Purple]

Hey thanks for the redirect to the question shoonya,

fopen is not a bad place to start if you want to manipulate files. If you read the page on php.net as initially suggested you will find the following code which almost does what you want..

The following cut directly from php.net - posted there by naidim at gmail dot com

While PHP does not have a function to insert text into the middle of a file, it is not that complicated to do.

[PHP]<?php
function addRSSItem($rss File, $firstItem, $item){
// Backup file
if(!copy($rssFi le, 'backup.rss')) die('Backup failed!');
// Store file contents in array
$arrFile = file($rssFile);
// Open file for output
if(($fh = fopen($rssFile, 'w')) === FALSE){
die('Failed to open file for writing!');
}
// Set counters
$currentLine = 0;
$cntFile = count($arrFile) ;
// Write contents, inserting $item as first item
while( $currentLine <= $cntFile ){
if($currentLine == $firstItem) fwrite($fh, $item);
fwrite($fh, $arrFile[$currentLine]);
$currentLine++;
}
// Delete backup
unlink('backup. rss');
}

$data = " <item>\n<title> $_POST['title]</title>\n".
" <description>$_ POST['description']</description>\n" .
" <pubDate>$_PO ST['date']</pubDate>\n".
" <link>http://www.site.com/mp3s/".
basename($_FILE S['fullPath']['name'])."</link>".
" <enclosure url=\"http://www.site.com/mp3s/".
basename($_FILE S['fullPath']['name']).
"\" length=\"$_FILE S[fullPath][size]\" type=\"audio/mpeg\" />".
" </item>\n";
addRSSItem('/var/www/html/rss/podcast.rss',20 ,$data);
?> [/PHP]

Purple

[epots9]

[PHP]$arrFile = file("./file.txt");[/PHP]
will open the file, store each line in a separate array slot.
line 1 = $arrFile[0] and so on.

[r035198x]

That's one of those bugging things in PHP. Anyone up for a class that can do it hiding the details so people can use it all the time they want to edit files?

[ronnil]

how bout http://pear.php.net/package/File/ ?? at least a very simple routine could be written using PEAR::File

[shoonya]

how bout http://pear.php.net/package/File/ ?? at least a very simple routine could be written using PEAR::File

@ purple

i hope you wont mind in explaining why there are two fwrite on line 16 nd 17 ??

cheers :)
shoonya

[Purple]

I would guess from the description of the code snippet:

While PHP does not have a function to insert text into the middle of a file, it is not that complicated to do.

it is inserting a record - you are trying to update a record - so change to contents and rewrite it..

Purple

[shoonya]

got it
thanks purple
;)

[pbmods]

Changed thread title to better describe the problem.