Issue #6: Make timezone configurable.

config.ini.example

@@ -7,3 +7,5 @@ BACKDROP_ROOT = /var/www/html
 BACKUP_DESTINATION = /home/user/me/backups
 ; Number of backups you would like to keep before starting to roll off.
 NUM_KEEP = 3
+; Timezone to use for dates in filenames. See https://www.php.net/manual/en/timezones.php
+TIMEZONE = UTC

files-backup.php

@@ -15,6 +15,7 @@
 $backdrop_root = $config['BACKDROP_ROOT'];
 $destination = $config['BACKUP_DESTINATION'];
 $num_keep = $config['NUM_KEEP'];
+$timezone = $config['TIMEZONE'];
 
 // Check which options were passed in on the command line.
 if (in_array('--rollover_files', $argv) || in_array('-rf', $argv)) {
@@ -31,7 +32,7 @@
 }
 
 // Get timestamp.
-date_default_timezone_set('EST');
+date_default_timezone_set($timezone);
 $date = date('F-j-Y-Gis');
 
 // Make backup.

sql-dump-sanitize.php

@@ -25,6 +25,7 @@
 $backdrop_root = $config['BACKDROP_ROOT'];
 $backup_destination = $config['BACKUP_DESTINATION'];
 $num_keep = $config['NUM_KEEP'];
+$timezone = $config['TIMEZONE'];
 
 // Get some *.inc files we need.
 require_once "$backdrop_root/core/includes/bootstrap.inc";
@@ -63,7 +64,7 @@
 }
 
 // Dump DB to file.
-date_default_timezone_set('EST');
+date_default_timezone_set($timezone);
 $date = date('F-j-Y-Gis');
 $file_name = $sanitize ? "$db_name-$date-sanatized" : "$db_name-$date";
 exec("mkdir -p $backup_destination");