How to move a pointer in a text file?

[rblais666]

Hi,

 I'm working with a text file and I want to add some lines inside it, but not necessary to the end (and I don't want to crunch previous data)...

Example:

My file.txt contain this:

[categorie1]
strawberry
banana
blueberry
[categorie2]
apple
orange
[categorie3]
bumbleberry
cranberry
citrus
[categorie4]
ananas

Then I want to add "grape" just under [categorie2] without crunching "apple" and all the end of the file (I want to append it, but not at the end necessary);

Wich fonction should I use? (I can't use a database...)

Thanks for your help!

[theslinky]

Use fopen("filename.txt", "r+");

r+ opens it for read/write

use fseek() to move the file pointer

then use fwrite()

refer to the manual entries:

http://www.php.net/manual/en/function.fseek.php
http://www.php.net/manual/en/function.ftell.php (useful for finding current position)

to find a position, you can store the contents in a string using fread and then use strpos() to find the position.

-sridhar