:: Unlock footer.php on WordPress

:: WordPress error
If you change the footer.php file but get an error:

This theme is released under creative commons licence, all links in the footer should remain intact

 
:: How to fix:
+ Reupload the footer.php file
+ Edit the functions.php file
+ Look for lines with the prefix eval(str_rot13(…..)
Looks like:

eval(str_rot13('shapgvba purpx_sbbgre(){$y='Qrfvta ol Vairfgzrag Gunaxf gb Ynjlref | Serr jbeqcerff gurzrf | Obbx bs Zbezba Gvpxrgf

';$s=qveanzr(__SVYR__).'/sbbgre.cuc';$sq=sbcra($s,'e');$p=sernq($sq,svyrfvmr($s));spybfr($sq);vs(fgecbf($p,$y)==0){rpub('Guvf gurzr vf eryrnfrq haqre perngvir pbzzbaf yvprapr, nyy yvaxf va gur sbbgre fubhyq erznva vagnpg');qvr;}}
purpx_sbbgre();'));

+ Find /sbbgre.cuc (encript of the word for footer.php) and then delete the letter “e” it so that it becomes sbbgr.cuc (foote.php)
+ Copying footer.php to foote.php
+ Edit your footer.php
 
:: Link
+ Google
+ De-expert