[Resolved] reading a line from a text file

[Madmee]

I have a text file with multiple lines of text. I also have a variable.
I want to check if the variable is contained anywhere in the text file. could someone please show me how to do this.

just to explain it a little bit better here is exacly what i want to do. i have a variable that contains the ip address of the person who is on my page. right now it writes their ip address to a text file. but i want it to check the text file for their ip before writing it, so that if it is already there it will not write it again.
thanks in advance
-Madmee

[halojoy]

I often use

strstr( $text_string, $find );

Will return TRUE if $find is within $text_string
This does not give any position. Just if it is somewhere.
Also useful if you want to search for parts of filenames in a directory
$find = '.txt'
Will return TRUE if filename contains '.txt' ( textfile )

http://php.net/strpos
Returns the numeric position of the first occurrence

There are several other similiar functions that can be used.
For example substr()

String Functions Manual

[Madmee]

Thanks that kind of worked, it is not quite working yet but i think i know what is wrong.

EDIT:
yay it works now.

Thanks again
-Madmee