Read particular line from txt file

This problem is killing me, and my knowledge of PHP….

I have a text file labeled “shows.radio” the contents are as follows:

2-4pm Show name 1
4-6pm Show name 2
6-8pm Show name 3
8-10pm Show name 4
10-12pm Show name 5


I would like to display one line from that text file when referenced by the time, so basically if the variable $time = 4-6pm is parsed to a script, the script will open the txt file and will display only the show tile “Show name 2” in the browser. How can this be done?

You could to something like this:

<?php
$filename = "shows.radio";
$handle = fopen ($filename, "r");
$contents = fread ($handle, filesize ($filename));
fclose ($handle);

$time = $_GET["time"] //use $_POST["time"] if you are posting from a form to this document

//Split the content on linebreaks, I'm not sure about how that works on your platform, if it's only carriage-return or linefeed, or if it's both. If this doesnt work, try using chr(13) . chr(10)
$arrLines = explode(chr(13),$contents);
for ($i = 0; $i < count($arrLines)) {
$lineStart = substr($arrLines[$i],0,strlen($time));
if ($lineStart == $time) {
echo substr($arrLines[$i],strlen($time)+1);
}
}
?>

Note that I'm writing this code from the top of my head ... I haven't tested it. Theoretically, it should work - but there could be some silly errors in it.

This should give you some idea though.

There were some obvious errors, which I have now fixed.

See if it works!

I have a large text file (5000 lines) I do not want to read the entire file.
I would like to read just a set of lines, like (41 - 80) or (81 - 120).

how can i do this