all
I need to write some php code in wordpress post and i found the solution on this http://www.hongkiat.com/blog/execute-php-in-wordpress-post-page-and-widget-sidebar/ using phpexec plugin.
But the old question as if i am switching between html editor to visual (wysiwyg) editor,it will change my php code also html :(
So what is solution for this, i do not want to disable my wysiwyg editor.