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请帮忙转换一个数组

hellok168 2010-07-28 11:21:49

print_r($_POST["group"]);输出结果如下：
Array ( [9] => Array ( [17] => 17 [18] => 18 ) [10] => Array ( [19] => 19 ) )
我现在要转换成17,18,19这样的，怎么弄？

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11 条回复

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fengyk 2010-07-29

$ar = array(
9 => array(
17 => 17,
19 => 18,
),
10 => array(
19 => 19,
array(20,21,22,array(23,25,array(39,40)))
),
);

$rs_array = array();
foo($ar,&$rs_array);
$rs_str = implode( ',', $rs_array );

echo $rs_str;

function foo($a,&$rs) {
if(!is_array($a)){
$rs[] = $a;
}
else{
foreach($a as $v) {
if(!is_array($v)){
$rs[] = $v;
}
else{
foo($v,&$rs);
}
}
}
return;
}

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Dleno 2010-07-29

[Quote=引用 9 楼 xuzuning 的回复:]

引用 8 楼 dingsongtao 的回复:
PHP code

$a=Array ( '9' => Array ('17' => 17,'18' => 18 ),'10' => Array ( '19' => 19 ));
$ids = "";
foreach($a as $value){
$ids .= $ids?",".join(",",$value):join(",",$v……
[/Quote]

恩，的确。

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xuzuning 2010-07-29

[Quote=引用 8 楼 dingsongtao 的回复:]
PHP code

$a=Array ( '9' => Array ('17' => 17,'18' => 18 ),'10' => Array ( '19' => 19 ));
$ids = "";
foreach($a as $value){
$ids .= $ids?",".join(",",$value):join(",",$value);
}
echo $ids;
……
[/Quote]
要是多一维就不能用了

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Dleno 2010-07-29



$a=Array ( '9' => Array ('17' => 17,'18' => 18 ),'10' => Array ( '19' => 19 ));

$ids = "";

foreach($a as $value){

	$ids .= $ids?",".join(",",$value):join(",",$value);

}

echo $ids;

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xuzuning 2010-07-29

这样写

$ar = array(

  9 => array(

    17 => 17,

    19 => 18,

  ),

  10 => array(

    19 => 19,

  ),

);



function foo($a) {

  $r = '';

  if(! is_array($a)) return $a;

  foreach($a as $v) {

    $r .= ($r ? ',' : '') . foo($v);

  }

  return $r;

}



echo foo($ar);

输出:17,18,19