EllisLab/CodeIgniter — pull request #2576 by ivantcholakov (2013-08-02 00:09:21+00:00)
Title: form_open() helper: Fixing an imprecise use of stripos().

stripos('method="get"', 'method="get"') is to return integer zero. In this case developer's intention (according to the comment above the current line) would get broken.