string manipulation

[Anon]

i have a txt file with 3 lines that look like this, blah~~123. how can i open that file, get just the left part(behind the tilde), and create commas between them? so its like blah, blah, blah,

[theslinky]

here is a sample code... it does it job (i hope!) but perhaps someone can optimize it:

<?php
$contents = file("filename.txt");

$output = "";

for($i = 0; $i < sizeof($contents); $i++) {
if($i != 0) {
$output .= ", ";
}
$output .= substr($contents[$i], 0, strpos($contents[$i], "~~"));
}

print $output; // will print "blah, blah, blah, ..."

?>

You may need to escape the ~ characters... not too sure :-)

-sridhar