Question

我有一个像这样的数组（它在数组中有一个数组。每个父数组只有一个子数组）

issue.ubsId     issue.majorVersion      issue.assetClass        issue.assetType issue.securityType      issue.active    issue.lastUpdatedTime   event.majorVersion      event.lastUpdatedTime   issue.status    issue.isoCfi    issue.isin      issue.nominalCurrency   issue.nominalValueOfUnit        issue.issueName issue.regSInd   issue.rule144AInd       issue.securityFormType
  issue.bbSecurityType    issue.cusip     issue.common    issue.cins      issue.valoren   issue.wertpapier        issue.ubsTradable       issue.restrictedListCode        issue.restrictedOffTime issue.restrictedOnTime
0200200307      13      EQUITY  STOCK   Common Stock    1       20171203120808000       15      20171203120810000       ACTIVE  ES----  SE0005994001    XXX     -9999.0 RLS GLOBAL PAID SUB     -9999   -9999   UNKNOWN Common Stock            107404309
       W7753D159       24542360                                -9999   -9999                   -9999
                                -9999   -9999.0                                 -9999.0 -9999   -9999.0         -9999
        -9999   0       SS      KA              -9999   2               -9999.0                 -9999   -9999   -9999   -9999   -9999   4       20150316054137973               0       -9999   -9999   0       -9999   0       0               -9999   9668256 2735465 -9999.0 -9999   -9999   -9999.0 -9999.0 -9999           -9999   -9999.0

我试图删除我的父数组（子数组之前的那个数组），并保留子数组，这样就可以将子数组转换为父数组。

我的期望如下：

 $value4old = Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [id] => 112
                    [id_tindak_lanjut] => 30.3
                    [nilai_tindak_lanjut] => 0
                    [memo_tindak_lanjut] => 
                    [tindak_lanjut_no] => 1
                    [tgl_tindak_lanjut] => 2018-01-30
                )

        )

    [1] => Array
        (
            [0] => Array
                (
                    [id] => 111
                    [id_tindak_lanjut] => 30
                    [nilai_tindak_lanjut] => 0
                    [memo_tindak_lanjut] => 
                    [tindak_lanjut_no] => 2
                    [tgl_tindak_lanjut] => 2018-01-07
                )

        )

    [2] => Array
        (
            [0] => Array
                (
                    [id] => 110
                    [id_tindak_lanjut] => 20.3
                    [nilai_tindak_lanjut] => 0
                    [memo_tindak_lanjut] => 
                    [tindak_lanjut_no] => 2
                    [tgl_tindak_lanjut] => 2017-10-24
                )

        )

    [3] => Array
        (
            [0] => Array
                (
                    [id] => 108
                    [id_tindak_lanjut] => 10.2
                    [nilai_tindak_lanjut] => 0
                    [memo_tindak_lanjut] => 
                    [tindak_lanjut_no] => 1
                    [tgl_tindak_lanjut] => 2018-01-19
                )

            [1] => Array
                (
                    [id] => 109
                    [id_tindak_lanjut] => 30.3
                    [nilai_tindak_lanjut] => 0
                    [memo_tindak_lanjut] => Tes
                    [tindak_lanjut_no] => 2
                    [tgl_tindak_lanjut] => 2018-01-22
                )

        )

)

我试过这段代码

Array
    (
                [0] => Array
                    (
                        [id] => 112
                        [id_tindak_lanjut] => 30.3
                        [nilai_tindak_lanjut] => 0
                        [memo_tindak_lanjut] => 
                        [tindak_lanjut_no] => 1
                        [tgl_tindak_lanjut] => 2018-01-30
                    )
                [1] => Array
                    (
                        [id] => 111
                        [id_tindak_lanjut] => 30
                        [nilai_tindak_lanjut] => 0
                        [memo_tindak_lanjut] => 
                        [tindak_lanjut_no] => 2
                        [tgl_tindak_lanjut] => 2018-01-07
                    )
                [2] => Array
                    (
                        [id] => 110
                        [id_tindak_lanjut] => 20.3
                        [nilai_tindak_lanjut] => 0
                        [memo_tindak_lanjut] => 
                        [tindak_lanjut_no] => 2
                        [tgl_tindak_lanjut] => 2017-10-24
                    )
                [3] => Array
                    (
                        [id] => 108
                        [id_tindak_lanjut] => 10.2
                        [nilai_tindak_lanjut] => 0
                        [memo_tindak_lanjut] => 
                        [tindak_lanjut_no] => 1
                        [tgl_tindak_lanjut] => 2018-01-19
                    )

                [4] => Array
                    (
                        [id] => 109
                        [id_tindak_lanjut] => 30.3
                        [nilai_tindak_lanjut] => 0
                        [memo_tindak_lanjut] => Tes
                        [tindak_lanjut_no] => 2
                        [tgl_tindak_lanjut] => 2018-01-22
                    )

    )

但我得到如下

$in = count($value4old)-1; 
$val = array(); 
for ($i=0;$i<=$in;$i++) {   
$val = array_merge($value4old[$i]); 
};
print_r($val); 
echo "</pre>";

我的代码可能出现什么问题？

Answer 1

有很多方法可以做到这一点，您的代码也可以正常运行，但您在import {Button,Modal} from 'react-bootstrap' <Button bsStyle="primary" type="submit">Create</Button>中犯了一个小错误：

您写道：

array_merge

您需要的是

$val = array_merge($value4old[$i]);

基本上你每次只是做一个作业而不是合并，你最终得到了最后一个值。

Answer 2

$new = [];
foreach ($value4old as $array) {
    foreach($array as $inner) {
        $new[] = $inner;
    }
}

Answer 3

要删除外部数组（当它只有一个值时），我总是使用current()。

$array = [
    '0' => ['key' => 'value'];
];

$array = current($array);

将导致：

array(1) {
    'key' => 'value'
}

对于需要展平多个键的数组，我建议只使用foreach循环。

$newArray = [];
foreach ($array as $key => $value) {
    $newArray[$key] = current($value);
}

删除外部多维数组

3 个答案: