php中怎么去除二维数组的某个字段？
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
------解决思路----------------------
1、这样去掉
$arr = array(<br /> "net" => array("on", "11", "101", "1001"),<br /> "login" => array("on", "10001","100001","1000001")<br />);<br /><br />array_walk($arr, function(&$t) {<br /> $t = array_diff($t, array('on'));<br />});<br /><br />print_r($arr);Array<br />(<br /> [net] => Array<br /> (<br /> [1] => 11<br /> [2] => 101<br /> [3] => 1001<br /> )<br /><br /> [login] => Array<br /> (<br /> [1] => 10001<br /> [2] => 100001<br /> [3] => 1000001<br /> )<br /><br />)<br />
$arr = array(<br /> "net" => array("on", "11", "101", "1001"),<br /> "login" => array("on", "10001","100001","1000001")<br />);<br /><br />$str ='';<br />foreach ($arr as $key=>$value){<br /> foreach ($value as $k =>$v){<br /> if($v != 'on') $str = $str<br><font color='#FF8000'>------解决思路----------------------</font><br>$v;<br /> }<br />}<br />var_dump($str);string(7) "1111111"<br />
<br />$arr = array("net" => array("on", "11", "101", "1001"),<br /> "login" => array("on", "10001","100001","1000001"));<br /><br />delon($arr);<br />print_r($arr);<br /><br /><br />function delon(&$arr){<br /> foreach($arr as $key=>&$val){<br /> foreach($val as $k=>$v){<br /> if($v=='on'){<br /> unset($val[$k]);<br /> }<br /> }<br /> }<br />}<br />
