The file() reads a file into an array.

Each array element contains a line from the file, with newline still attached.

Syntax

Code:
file(path,include_path,context)
path Required.------ Specifies the file to read

include_path--------- Optional. Set this parameter to '1' if you want to search for the file in the include_path (in php.ini) as well

context---------------- Optional. Specifies the context of the file handle. Context is a set of options that can modify the behavior of a stream. Can be skipped by using NULL.

Code:
<?php
print_r(file("test.txt"));
?>
The output of the code above will be:

Code:
Array
(
[0] => Hello World. Testing testing!
[1] => Another day, another line.
[2] => If the array picks up this line,
[3] => then is it a pickup line?
)