Matching data between two arrays

Why does this not work:

$subcats=array(
'wedding-cakes'=>array('cakes', 'Wedding Cakes'),
'birthday-cakes'=>array('cakes', 'Birthday Cakes')
);

Code (markup):

$cat=array(
'cakes'=>array('Cakes', 'Wedding Cakes, Birthday Cakes')
);

Code (markup):

foreach($subcats as $index1 => $value1)
if($subcats[$index1][0] == $cat)
{
//echo $subcats[$index1][1];
}

Code (markup):

 

You are confusing what foreach does.. Try below.

foreach($subcats as $index)
   if($index == $cat)
   {
      print_r($index);
   }
}

PHP: