Make an associative massive

[orion_rus]

Hello world, i have a following common array:
$array[0..250]=array('a','b','c');
and i need to make this:
$multarray['a']['b']['c']=0..250;

how i can make it?
Thanks in advance

[coopster]

How about looping through and reversing them?

$array = array('0..250' => array('a','b','c')); 
foreach ($array as $k => $v) { 
foreach ($v as $val) { 
$multarray[$val] = $k; 
} 
} 
print_r($array); 
print_r($multarray);