Problem: “Warning: in_array() [function.in-array]: Wrong datatype for second argument”

To fix the problem:
Warning: in_array() [function.in-array]: Wrong datatype for second argument in /home/sitename/public_html/wptemp/wp-content/plugins/mm-chat/chat.php on line 446 
open up your chat.php file and on line 446 where you see “in_array()…” change that to “@in_array()”.

Do that to any warnings you’re getting.

(Note: This fix is simply a warning suppression.)

Solution source: http://getshopped.org/forums/topic/warning-in_array-functionin-array-wrong-datatype-for-second-argument-in/

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