PHP array comparison solution

PHP array comparison solution this is the first array [code = PHP] array & nbsp; 0 & nbsp ;=& gt; & nbsp; & nbsp; array & nbsp; & nbsp PHP array comparison solution
This is the first array.
[Code = PHP]
Array
0 =>
Array
0 => string '20140901' (length = 7)
1 => string '20140901' (length = 7)
2 => string '20140901' (length = 7)
1 =>
Array
0 => string '20140901' (length = 7)
1 => string '20140901' (length = 7)
3 =>
Array
0 => string '20140901' (length = 7)
1 => string '20140901' (length = 7)
[/Code]
This is the second array.
[Code = PHP]
Array
0 => string '20140901' (length = 7)
1 => string '20140901' (length = 7)
2 => string '20140901' (length = 7)
[/Code]

Comparison between the first array and the second array removes different array elements and retains the structure of the first array.

The expected result is as follows:
[Code = PHP]
Array
0 =>
Array
0 => string '20140901' (length = 7)
1 => string '20140901' (length = 7)
1 =>
Array
0 => string '20140901' (length = 7)
3 =>
Array
0 => string '20140901' (length = 7)

[/Code]

Which of the following heroes can help me check it out?


------ Solution --------------------
Data sorting takes much longer than coding!

PHP code

$a = array(  0 => array(    0 => '1000061',     1 => '1000031',     2 => '1000056',     ),  1 => array(    0 => '1000056',     1 => '1000049',     ),  3 => array(    0 => '1000056',     1 => '1000048',    ),); $b = array(   0 => '1000047',   1 => '1000056',  2 => '1000061', );foreach($a as &$v) $v = array_intersect($v, $b);print_r($a);