数组继续重复在前面

Question

我有一个数组在它的值中保存字符串，我在每个值中找到下划线，分割它并将它插入到新数组中，它做得很好，但是只对第二个数组中的第一个数组，它也重复第一个数组。

，例如

$someArraVal[] = 'abc_xyz__vr1_vr2';
$someArraVal[] = 'emf_ccc__vr2_vr3';

首先，在双下划线之后，我得到了所有的东西，然后用下划线爆炸它们，并尝试像下面这样的数组。

Array
(
[0] => Array
    (
        [0] => vr1
        [1] => vr2
    )

[1] => Array
    (
        [2] => vr3
        [3] => vr4
    )
)

但我得到了

Array
(
[0] => Array
    (
        [0] => vr1
        [1] => vr2
    )

[1] => Array
    (
        [0] => vr1
        [1] => vr2
        [2] => vr3
        [3] => vr4
    )
)

码

    $someArraVal[] = 'abc_xyz__vr1_vr2';
    $someArraVal[] = 'emf_ccc__vr3_vr4';

    $arr1 = [];
    $arr2 = [];
    $xmx = [];


    foreach ($someArraVal as $key => $value) {

        $afterunderscore = substr($value, strpos($value, "__") + 1);
        // $addPipe = str_replace("_","|",$afterunderscore);
        $abc = substr($afterunderscore, 1);
        $arr1 = explode('_',$abc);

        foreach ($arr1 as $k => $v) {
            $arr2[] = $v;
        }

        $xmx[] = $arr2;

    }

    printR($xmx);

Answer 1

您从不重置$arr2，因此每次迭代都会追加更多的数据。

您可以在$arr2 = []之后添加foreach。

更好的解决办法是：

foreach ($someArraVal as $key => $value) {
    $afterunderscore = substr($value, strpos($value, "__") + 1);
    $xmx[] = explode('_',substr($afterunderscore, 1));
}

实例：3v4l

Answer 2

您需要在foreach循环开始时清空数组$arr2。

.
.
.


    foreach ($someArraVal as $key => $value) {

        $arr2 = []; //Empty the $arr2 at begining of the loop
        .
        .
        .

    }

Answer 3

Second array keeps repeating because you are looping inside the array which will take all the values.

<?php

$someArraVal[] = 'abc_xyz__vr1_vr2';
    $someArraVal[] = 'emf_ccc__vr3_vr4';

    $arr1 = [];
    foreach ($someArraVal as $key => $value) {

        $afterunderscore = substr($value, strpos($value, "__") + 1);
        $abc = substr($afterunderscore, 1);
        $arr1[] = explode('_',$abc);    
    }

echo '<pre>';
print_r($arr1);
echo '</pre>';

Please check : https://prnt.sc/oitez2