On the http://docs.moodle.org/en/Development:Coding_style page please:

• have a look at section http://docs.moodle.org/en/Development:Coding_style#Wrapping_Arrays that describes multi-line associate arrays
• update http://docs.moodle.org/en/Development:Coding_style#Associative_arrays :
  • the indentation should be 8 spaces (not 4)
  • put closing bracket and semicolon ); at the end of previous line 'secondkey' => 'secondvalue' to make it consistent