Capture all of the tweets that have the word 'bieber' in them and save them to a file

bieber_finder.php

<?php
$fp = fopen("http://USERNAME:[email protected]/1/statuses/filter.json?track=bieber","r");
while($data = fgets($fp))
{
    $time = date("YmdH");
    if ($newTime!=$time)
    {
        @fclose($fp2);
        $fp2 = fopen("{$time}.txt","a");
    }
    fputs($fp2,$data);
    $newTime = $time;
}
?>