我有一个从插件中获得的带有浮点索引的数组。我想解析这个数组,并将浮动的数组作为一个新数组放入。意思是我有
[1] => gsurvey128f54af2
[2] => gsurvey282bd4253
[5.1] => gsurvey5649a964f
[5.2] => gsurvey5fddb5e9f
[5.3] => gsurvey533c5b311
[5.4] => gsurvey5c8933efb
[5.5] => gsurvey5da48f59b
我想要的是:
[1] => gsurvey128f54af2
[2] => gsurvey282bd4253
[5] => array (
[0] => gsurvey5649a964f
[1] => gsurvey5fddb5e9f
[2] => gsurvey533c5b311
[3] => gsurvey5c8933efb
[4] => gsurvey5da48f59b
)
我不清楚处理这个问题的最佳方法是什么。
我在上面评论说,这个问题很容易出错,因为可能会有将单个值同时设置为字符串和数组的输入。这显然会失败。假设输入是干净的。。。
$new_array = array();
foreach($old_array as $key=>$val)
{
$a = explode('.', $key);
if(sizeof($a)==2)
{
if(!isset($new_array[$a[0]])) $new_array[$a[0]] = array();
$new_array[$a[0]][] = $val;
}
else $new_array[$key]=$val;
}
array_walk示例:
$array = array (
'1' => 'gsurvey128f54af2',
'2' => 'gsurvey282bd4253',
'5.1' => 'gsurvey5649a964f',
'5.2' => 'gsurvey5fddb5e9f',
'5.3' => 'gsurvey533c5b311',
'5.4' => 'gsurvey5c8933efb',
'5.5' => 'gsurvey5da48f59b'
);
$output = array();
array_walk( $array, function( $item, $key ) use ( &$output ) {
$keys = explode( '.', $key );
isset( $keys[1] ) ? $output[ $keys[0] ][ $keys[1] ] = $item : $output[ $keys[0] ] = $item;
});
print_r( $output );
/*
Array
(
[1] => gsurvey128f54af2
[2] => gsurvey282bd4253
[5] => Array
(
[1] => gsurvey5649a964f
[2] => gsurvey5fddb5e9f
[3] => gsurvey533c5b311
[4] => gsurvey5c8933efb
[5] => gsurvey5da48f59b
)
)
*/
对于这个特定的情况,这应该有效:
foreach($array as $k => $v) {
if(count($i = explode('.', $k)) > 1) {
$result[$i[0]][] = $v;
} else {
$result[$k] = $v;
}
}