php中怎么去除二维数组的某个字段?

Feng火 2015-01-11 01:34:42
1,需求:有如下二维数组,怎么去除此数组的字段"on" 生成一个新数组 $arr2
$arr = array("net" => array("on", "11", "101", "1001"),
"login" => array("on", "10001","100001","1000001"));

$arr2 = array("net" => array( "11", "101", "1001"),
"login" => array("10001","100001","1000001"));
或者遍历时候去掉on也行
2,能达到这样的效果也可以
$arr = array("net" => array("on","1", "2","4"),
"login" => array("on","10001","100001","10000001")
);
$str ='';
foreach ($arr as $key=>$value){
foreach ($value as $k =>$v){
$str=$str|$v;
}
}
var_dump($str);
//值运算后面数字的或运算得到值$str,"on"这个字段是不能参加运算的


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傲雪星枫 2015-01-11
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2

$arr = array("net" => array("on","1", "2","4"),
 "login" => array("on","10001","100001","10000001")
);

delon($arr);

$str ='';
foreach ($arr as $key=>$value){
    foreach ($value as $k =>$v){
        $str=$str|$v;
    }
}
var_dump($str);


 
function delon(&$arr){
    foreach($arr as $key=>&$val){
        foreach($val as $k=>$v){
            if($v=='on'){
                unset($val[$k]);
            }
        }
    }
}
string(8) "70001101"
Feng火 2015-01-11
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Feng火 2015-01-11
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好的,灰常感谢
傲雪星枫 2015-01-11
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$arr = array("net" => array("on", "11", "101", "1001"),
    "login" => array("on", "10001","100001","1000001"));

delon($arr);
print_r($arr);


function delon(&$arr){
	foreach($arr as $key=>&$val){
		foreach($val as $k=>$v){
			if($v=='on'){
				unset($val[$k]);
			}
		}
	}
}
Array ( [net] => Array ( [1] => 11 [2] => 101 [3] => 1001 ) [login] => Array ( [1] => 10001 [2] => 100001 [3] => 1000001 ) )
xuzuning 2015-01-11
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1、这样去掉
$arr = array(
  "net" => array("on", "11", "101", "1001"),
  "login" => array("on", "10001","100001","1000001")
);

array_walk($arr, function(&$t) {
  $t = array_diff($t, array('on'));
});

print_r($arr);
Array
(
    [net] => Array
        (
            [1] => 11
            [2] => 101
            [3] => 1001
        )

    [login] => Array
        (
            [1] => 10001
            [2] => 100001
            [3] => 1000001
        )

)
2、这样运算
$arr = array(
  "net" => array("on", "11", "101", "1001"),
  "login" => array("on", "10001","100001","1000001")
);

$str ='';
foreach ($arr as $key=>$value){
    foreach ($value as $k =>$v){
        if($v != 'on') $str = $str|$v;
    }
}
var_dump($str);
string(7) "1111111"

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