Using PHP variable inside function [closed] - php

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I use the following code to get the full filename of a package using only the name of the app:
<?php
// define which app
$app = "appname";
// Search the directory for possible matches
foreach (glob("../../debs/com.dev.".$app."*") as $filename) {
preg_match('/\\d\\.\\d-\\d_.*\\.deb/', $filename, $matches);
$debname = "com.dev.".$app."_{$matches[0]}\n"; }
echo $debname;
?>
The filename of the package ($debname) is then shown correctly in the echo as: com.dev.appname_1.0-1_iphoneos-arm.deb
So i'm then trying to use this $debname variable to get the size of the file:
<?php function format_size($size) {
$sizes = array(" Bytes", " KB", " MB", " GB", " TB", " PB", " EB", " ZB", " YB");
if ($size == 0) { return('n/a'); } else {
return (round($size/pow(1024, ($i = floor(log($size, 1024)))), 2) . $sizes[$i]); }
}
echo format_size(filesize("../../debs/".$debname));
?>
For some weird reason the code is not showing the size and it shows n/a
If i set the debname variable manually to $debname = "com.dev.appname_1.0-1_iphoneos-arm.deb" it works fine and i get the file size..
I just can't figure out what's the problem
I tried using SESSION..
session_start();
$SESSION['debname'] = $debname;
...
...
echo format_size(filesize("../../debs/".$SESSION['debname']));
But same issue..

Answer 1

This line is wrong:
$debname = "com.dev.".$app."_{$matches[0]}\n";
^^ new-line character
Note that you are adding a new-line to the end of your string. You should remove that and confirm the correct name with a var_dump($debname); if necessary to make sure there are no white-spaces in between or at the end:
$debname = "com.dev.".$app."_{$matches[0]}";