php数组处置

php数组处理
array(4) {
[0] => array(3) {
["Id"] => string(2) "24"
["FromMid"] => string(3) "157"
["ToMid"] => string(3) "157"
}
[1] => array(3) {
["Id"] => string(2) "22"
["FromMid"] => string(3) "157"
["ToMid"] => string(3) "176"
}
[2] => array(3) {
["Id"] => string(1) "4"
["FromMid"] => string(3) "157"
["ToMid"] => string(2) "25"
}
[3] => array(3) {
["Id"] => string(1) "1"
["FromMid"] => string(2) "25"
["ToMid"] => string(3) "157"
}
}

我想把["FromMid"]==["ToMid"]&&["ToMid"]==["FromMid"]处理掉 只留一条
得出的结果应该是
array(4) {
[0] => array(3) {
["Id"] => string(2) "24"
["FromMid"] => string(3) "157"
["ToMid"] => string(3) "157"
}
[1] => array(3) {
["Id"] => string(2) "22"
["FromMid"] => string(3) "157"
["ToMid"] => string(3) "176"
}
[2] => array(3) {
["Id"] => string(1) "4"
["FromMid"] => string(3) "157"
["ToMid"] => string(2) "25"
}
}

------解决方案--------------------

PHP code

------解决方案--------------------

PHP code

$data = array(    array("Id" => "24", "FromMid" => "157", "ToMid" => "157"),    array("Id" => "22", "FromMid" => "157", "ToMid" => "176"),    array("Id" => "4", "FromMid" => "157", "ToMid" => "25"),    array("Id" => "1", "FromMid" => "25", "ToMid" => "157"));$markList = array();foreach ($data as $key => $val) {    $posi = md5($val['FromMid'] . $val['ToMid']);    $anti = md5($val['ToMid'] . $val['FromMid']);    if (isset($markList[$posi]) || isset($markList[$anti])) {        unset($data[$key]);    } else {        $markList[$posi] = $markList[$anti] = 1;    }}echo '
';print_r($data);/**输出：Array(    [0] => Array        (            [Id] => 24            [FromMid] => 157            [ToMid] => 157        )    [1] => Array        (            [Id] => 22            [FromMid] => 157            [ToMid] => 176        )    [2] => Array        (            [Id] => 4            [FromMid] => 157            [ToMid] => 25        )*/