How to judge a value change in a loop

How to determine a value change in a loop

PHP Code

  
  $menus = Array (    0=> "Top menu",    1=> "main Menu",    2=> "main Menu",    3=> "left menu",    4 = > "Footer menu",    5=> "Footer menu"), foreach ($menus as $menu) {    //How to tell in this method $menu has changed}//This method can be implemented, But I don't want to use this for ($i =0; $i
  
  

   ";    }}
  

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------Solution--------------------

PHP Code

This method can be implemented, but I do not want to use this for ($i =0; $i
  
  

   ";    }} 
   
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