To write all the lines of the file in other words to read the file line by line you can write the code like this:
<?php
$names=file('name.txt');
// To check the number of lines 
echo count($names).'<br>';
foreach($names as $name)
{
   echo $name.'<br>';
}
?>

this example is so basic to understand how it's working. I hope it will help many beginners.

Regards,
Bingo