File rewrite not working?

Question

test.php

<?php
$filec = fopen('test.txt','w');

$arr = file('test.txt');

foreach ($arr as $key => $value) {
    fwrite($filec,$value);
}

fclose($filec);
?>

test.txt

asdjlaksjd
asdhfwejkyhtjkre
jfdhgdjkf'hgjldsff
sfjnkbnm,cv
sm,nxcm,b,
sdjlhfskld
jfsdfwerwlur
slfdjsdkljfklsdjf

When I run test.php, test.txt is emptied. Does anyone know why?

Echoing $value, etc seems to work.

Answer 1

When you call fopen with w, you are effectively clearing the file. When you call file, you're reading from that cleared file.

Put the file call before the fopen one.