Friends book

Let's make a personal application that allows us to collect names of our friends. We will need a simple web form and plain text file.

It should work like this:

Example form

<form action="index.php" method="get">
    Name: <input type="text" name="name">
    <input type="submit">
</form>

File operations

<?php
$filename = 'friends.txt';
$file = fopen( $filename, "r" );
while (!feof($file)) {
    // reading file
}

// appending to file
$file = fopen( $filename, "a" );
fwrite( $file, "some string" );