Help: file manipulation with PHP

[aa-true-vicious]

Okay,

I have a file called "email.x"
It will contain every email address of the people in my group, seperated by a |
eg: [e-mail]|[e-mail]|[e-mail]
then, using $arr = split("|", $page); ($page = the file) i will break the file into an array

Questions:

How do I add e-mails to the list? (form: $email)
How do I remove e-mails from the list? (using checkboxes in a form)

Thanks

[drawmack]

adding is simple just open the file in append mode and then use fwrite:

http://www.php.net/fopen
http://www.php.net/fwrite

removing them is slightly more complicated what I would do is read the file in useing fread

http://www.php.net/fread

then use explode to create an array

http://www.php.net/expode

then I would loop through the array creating the page with the check boxes. Each email's check box would have the id eml<num> where num is the email's position in this array and a value of 1 then I would do this.

//open a temp file
for($i=0;$i<count($emails);$i++) {
  $cur_id = 'eml_' . $i;
  if(1 != $_POST[$cur_id)) {
    //write the email to a temp file and put a | after it
  } //end if
} //end for
//get rid of the last caracter in the temp file
//close the temp file
//move the temp file and overwrite the old email.x file

[aa-true-vicious]

thanks
wait - when u open a file, it places the pointer at the start of the file, not the end - how do i overcome this?
Thanks!

[drawmack]

http://www.php.net/fopen

look at all the different open methods some of the place the pointer at the end