open file in read and write mode..w+

[agphoto]

There is big or problem in open file in read and write mode..

$file = "data.txt";
 
$fp = fopen($file,"w+");
$line = fgets($fp,"120"); // i need only 1st line to read and upto 120 bytes
echo $line;
fclose($fp);
 

coding is not problem, The problem is file modifier as mention in PHP
use " w+ " for read the data in file and then overwrite the new data.
but it is not read the date in file already , while open the file it delete the data in file and then write to it.

so for read data i had used to open file two times first to read and then with w+ for over write...


>>and other is "r+" file modifier mention in php read and write, it does but it append the new data to file , which i do not need i need read the data from file and overwrite the new data to file...but w+ is also not worked..


Please tell the soluion how to solve this..

Thanks

[pbmods]

Heya, agphoto.

Try reading the contents of the file using file_get_contents() (PHP: file_get_contents - Manual) and then doing a separate fopen(..., 'w') to overwrite the file contents.

[nathj]

Alternatively if you want the file open for read and write but don't want the contents overwritten then try opening the file using the 'a+' mode.

fopen manual

This should sort you out, if not then pbmods is the one to follow.

Cheers
nathj