Searching Multidimensional Array for Value PHP

I feel like this is a pretty easy question, but I can't seem to find the answer anywhere.

$array = ('colors' => array('red','orange'),
          'numbers'=> array('one','two')
         );

How do a perform a search on the $array to determine if colors contai开发者_如何学Cns a value of red?

Thanks in advance.

There is no built in array function to do this. Thes simplest way to to it in the specific case youve given is to do:

$hasRed = (isset($array['colors'] && in_array('red', $array['colors']));

Simplest way would be;

$hasRed = isset($array['colors']['red']);

Try this:

array_search("red", $array[ "colors" ])