php - How can I limit the amount of array items -

i've got following portion of code:

private function get_shortcodes() {         $shortcodes = array();         $shortcodes += array_fill_keys( array( 'wpbusdirmanaddlisting',                                                'businessdirectory-submitlisting' ),                                         array( &$this->controller, 'submit_listing' ) );         $shortcodes += array_fill_keys( array( 'wpbusdirmanmanagelisting',                                                'businessdirectory-managelistings',                                                'businessdirectory-manage_listings' ),                                         array( &$this->controller, 'manage_listings' ) );         $shortcodes += array_fill_keys( array( 'wpbusdirmanviewlistings',                                                'wpbusdirmanmviewlistings',                                                'businessdirectory-view_listings',                                                'businessdirectory-viewlistings',                                                'businessdirectory-listings' ),                                         array( &$this, '_listings_shortcode' ) );             $shortcodes += array_fill_keys( array( 'wpbusdirmanui',                                                'businessdirectory',                                                'business-directory' ),                                         array( &$this->controller, 'dispatch' ) );         $shortcodes += array_fill_keys( array( 'businessdirectory-search',                                                'businessdirectory_search' ),                                         array( &$this->controller, 'search' ) );         $shortcodes['businessdirectory-featuredlistings'] = array( &$this, '_featured_listings_shortcode' );          return apply_filters( 'wpbdp_shortcodes', $shortcodes );     } 

where part...

$shortcodes += array_fill_keys( array( 'wpbusdirmanviewlistings',                                                'wpbusdirmanmviewlistings',                                                'businessdirectory-view_listings',                                                'businessdirectory-viewlistings',                                                'businessdirectory-listings' ),                                         array( &$this, '_listings_shortcode' ) ); 

...is supposed display directory listings in website. works. retrieving 10 listings according plugin settings. need retrieve 2. in other words, need limit it.

i've tried using array_slice , array_splice array_unique retrieve few values, didn't work.

what doing wrong?

for example, tried using this:

array_slice( ( &$this, '_listings_shortcode' ),0,2) 

no can do.

edit

still trying...

if (!in_array('wpbusdirmanmviewlistings', $shortcodes)){     if(count($shortcodes)>=2)         array_shift($shortcodes);     $shortcodes[] = 'wpbusdirmanmviewlistings'; } 

edit 2

well, php manual logic correct, it's still not working, not getting errors though, tried these 2 methods:

this

if (!in_array('_listings_shortcode', $shortcodes)){         if(count($shortcodes)>=1)             array_shift($shortcodes);         $shortcodes[] = ('_listings_shortcode');     }    

and this

if (!in_array('_listings_shortcode', $shortcodes)){         $count = count($shortcodes);         if($count>=1)             array_shift($shortcodes);         $shortcodes[] = ('_listings_shortcode');     } 

you can obtaining array length , if length less or equal desired amout , add element end of array.

here simple example that, don't know if want... :)

if (!in_array($expectedarray, $yourarray)){     if(count($yourarray)>=2)         array_shift($yourarray);     $yourarray[] = $expectedarray; } 

for more information : $expectedarray not an array, it's value expect $yourarray please check this in_array example.