Development talk:Coding
From MoodleDocs
Single quotes vs. double quotes: no noticable speed differences...
As PHP 4.3.0 is now the minimum version, the speed issue of single quotes vs. double quotes is negligible. See http://phplens.com/lens/php-book/optimizing-debugging-php.php, under "Useless Optimizations". There might be other reasons, however. I like to use "". ' is more convinient if a string has a lot of "s it it, like 'I have no "issues" with the "quotations"'. --Samuli Karevaara 04:26, 10 October 2006 (CDT)
Using clone()
Unless I'm mistaken, there are some cases where we should use Moodle's full_clone() method. Maybe someone could clarify this...