how can i get specific value in array

[Ainslietu]

I will explain clearly\[code\]$array = array("1" => array(0 =>"aa",1 =>"bb", 2 => "cc",3=>"dd"), "2" => array(0 =>"aa1",1 =>"bb1", 2 => "cc1",3=>"dd1"));\[/code\]In this two dimension are \[code\]$array2[$a][$b];\[/code\]i know $a value ..$b is unknownif i using \[code\]$a =1\[/code\] means i want to filter \[code\]array(0 =>"aa",1 =>"bb", 2 => "cc",3=>"dd")\[/code\] this arraybut i need to get the second array element .. Any function is available to do that Someone please help me!