Fix notice in command.

[tarjei]

This commit fixes a notice that happens if the files array contains gaps, for exampel because of an unset during an earlier filterstep.

Part of the output I saw (on Ubuntu 10.10):
tarjei@k4v:~/Zero/div/ZeroCMS$ phpcpd src/
phpcpd 1.3.2 by Sebastian Bergmann.

PHP Notice: Undefined offset: 9 in /usr/share/php/PHPCPD/TextUI/Command.php on line 252
PHP Stack trace:
PHP 1. {main}() /usr/bin/phpcpd:0
PHP 2. PHPCPD_TextUI_Command::main() /usr/bin/phpcpd:51
PHP 3. PHPCPD_TextUI_Command::getCommonPath() /usr/share/php/PHPCPD/TextUI/Command.php:219
PHP Notice: Undefined offset: 10 in /usr/share/php/PHPCPD/TextUI/Command.php on line 252
PHP Stack trace:
PHP 1. {main}() /usr/bin/phpcpd:0
PHP 2. PHPCPD_TextUI_Command::main() /usr/bin/phpcpd:51
PHP 3. PHPCPD_TextUI_Command::getCommonPath() /usr/share/php/PHPCPD/TextUI/Command.php:219
PHP Notice: Undefined offset: 11 in /usr/share/php/PHPCPD/TextUI/Command.php on line 252
PHP Stack trace:
PHP 1. {main}() /usr/bin/phpcpd:0
PHP 2. PHPCPD_TextUI_Command::main() /usr/bin/phpcpd:51
PHP 3. PHPCPD_TextUI_Command::getCommonPath() /usr/share/php/PHPCPD/TextUI/Command.php:219
PHP Notice: Undefined offset: 12 in /usr/share/php/PHPCPD/TextUI/Command.php on line 252
PHP Stack trace:
PHP 1. {main}() /usr/bin/phpcpd:0
PHP 2. PHPCPD_TextUI_Command::main() /usr/bin/phpcpd:51
PHP 3. PHPCPD_TextUI_Command::getCommonPath() /usr/share/php/PHPCPD/TextUI/Command.php:219
PHP Notice: Undefined offset: 13 in /usr/share/php/PHPCPD/TextUI/Command.php on line 252
PHP Stack trace:

[mwillbanks]

This actually works; however, it is still not ideal. There is actually a better way: array_shift :)

[tarjei]

mwillbanks: care to give a bit more of an example? Do you want to use array_shift in the for loop below?

[mwillbanks]

tarjei: https://gist.github.com/1236569

Although; this all changes when you now look at the repo state of phpcpd. So it may just be temporary until the next release is posted.

[tarjei]

OK, this seems reasonable. I'll close the request :)
T