<?php$A=array(array(1,2),array(2,4),array(3,2));$B=array(array(3,1),array(1,2));$C=array();foreach($Aas$a){$Ck=$a[0].'#'.$a[1];$C[$Ck]=1;}$D=array();foreach($Bas$b){$Dk=$b[0].'#'.$b[1];$D[$Dk]=1;}/**A-B*/$A_B=array();foreach($Cas$key=>$val){if(isset($D[$key])&&$D[$key]==1){}else{$A_B[]=explode('#',$key);}}var_dump($A_B);echo'<br/>';/**B-A*/$B_A=array();foreach($Das$key=>$val){if(isset($C[$key])&&$C[$key]==1){}else{$B_A[]=explode('#',$key);}}var_dump($B_A);