php - Undefined index if the array -

i using following function options stored in wordpress.

function get_settings( $option ) {     $options = get_option( 'my_options', my_default_options() );     return $options[ $option ]; } 

in above function my_default_options() returns array has default values. if call above function like: get_settings("title"); work fine if "title" exists in default options array.

however if title not exist in default options array, following warning:

notice: undefined index: 

how can fix notice? tried following:

function get_settings( $option ) {     $defaults = my_default_options();      if(in_array($option, $defaults)){         $options = get_option( 'my_options', my_default_options() );         return $options[ $option ];     } } 

but still returns same notice.

make sure if exists or not using isset

function get_settings( $option ) {     $defaults = my_default_options();      if(in_array($option, $defaults)){         $options = get_option( 'my_options', my_default_options() );         return isset($options[ $option ]) ?  $options[ $option ] : '';     } }