i know that many have asked for help regarding "undefined offset: 0" and i think i know what it means (no value at this position) but i cant figure out why i get this error.

i want to use a txt filled with youtube ids and get the titles back. It works without a problem if i type in the ids directly, but if i use the variable $video_id i get the error "undefined offset: 0"

​

<?php

$ids = file("ids.txt");

for($i=0;$i<count($ids);$i ){

$video_id = $ids[$i];

$api_key = 'MY_API_KEY';

$api_url = 'https://www.googleapis.com/youtube/v3/videos?part=snippet,contentDetails,statistics&id='.$video_id.'&key='.$api_key;

$data = json_decode(file_get_contents($api_url));

echo $data->items[0]->snippet->title;

echo $video_id;

}

?>

​

Can someone help and tell me why that doesnt work?