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<?php function test($v1,$v2){ if($v1["id"]===$v2["id"]) return 0; else return -1; } $array2=NULL; $array=array( array("id"=>1,"data"=>1), array("id"=>1,"data"=>2), array("id"=>1,"data"=>3), array("id"=>3,"data"=>5), array("id"=>8,"data"=>1), array("id"=>10,"data"=>10) ); print_r(array_udiff_assoc($array, $array, null,'test'));

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