How to Fix Cannot Modify Header Information
How to Fix Cannot Modify Header - headers already sent by ... in WordPress. Own a website or blog with the engine WordPress which is confused with the problem of the emergence of a warning "Warning: Can not modify header information - headers already sent by ..." when trying to login to wp-admin, causing you can not indulge write, approve comment, etc., cause can also be caused due to the occurrence of blank lines in the file functions.php.
For that you can try the solution How to Cope Warning: Can not modify header information - headers already sent by ... at Wordpress following:
Open the file functions.php theme you are currently using. Of course you can not edit from the menu Appearance - Editor WP-Admin, but can be edited via the file manager in cPanel hosting you, or you can also use applications such as Adobe Dreamweaver to connect to your hosting server via FTP. If you do not know the name of the currently active theme you are using, it is time reflection. If you still do not know and themes that exist in the themes folder you quite a lot, a short way to find out is to delete the entire folder existing theme and leaving only TwentyEleven folder this is the default WordPress theme before version 3.5 came out later. If you were forced to leave TwentyEleven folder only, then the following guide lines please please ignore and immediately try to sign wp-admin of your browser. To find out how respectable theme that is being used, you can go into the database via phpMyAdmin.
Make sure that the PHP code cover the bottom row. If not at the bottom, then remove all the blank lines under cover of the PHP code. In fact, you can remove the cover PHP code that is located at the bottom of it.
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