多维php数组不起作用

Question

您好，我正在尝试创建一个多维数组，但遇到了问题。我有一个多维数组，我正在尝试将其他数组推到上面。数组是在数组中创建和推送的。

            $initialChild = $selectorDetailsArray[0];
            $selectorDetailsMultiDimArray = array();
            $multiDimHoldArray = array();

            for($r=0;$r<count($selectorDetailsArray);$r+=3){
                echo "Test vars are ".$selectorDetailsArray[$r]." : ".$initialChild."<br> ";
                if(intval($selectorDetailsArray[$r]) == intval($initialChild)){
                    echo"<br> r is ".$r."<br>";
                    array_push($multiDimHoldArray,$selectorDetailsArray[$r+1],$selectorDetailsArray[$r+2]);
                    echo"<br> values are ".$selectorDetailsArray[$r+1]."  ".$selectorDetailsArray[$r+2]."<br>";
                    print "<pre>";
                    print_r($multiDimHoldArray);
                    print "</pre>";
                }else{
                    array_push($selectorDetailsMultiDimArray,$multiDimHoldArray);
                    $multiDimHoldArray = array();
                    echo "initial child is ".$initialChild."<br>";
                    $initialChild = $selectorDetailsArray[$r];

                    echo "initial child after change is ".$initialChild."<br>";
                }
            }
            print "<pre>";
            print_r($selectorDetailsMultiDimArray);
            print "</pre>";

            exit;

输出是这样的

            Array
            (
                [0] => 65
                [1] => 1
                [2] => 0
                [3] => 65
                [4] => 29
                [5] => 64
                [6] => 66
                [7] => 1
                [8] => 69
                [9] => 66
                [10] => 29
                [11] => 65
            )
            Test vars are 65 : 65

            r is 0

            values are 1 0
            Array
            (
                [0] => 1
                [1] => 0
            )
            Test vars are 65 : 65

            r is 3

            values are 29 64
            Array
            (
                [0] => 1
                [1] => 0
                [2] => 29
                [3] => 64
            )
            Test vars are 66 : 65
            initial child is 65
            initial child after change is 66
            Test vars are 66 : 66

            r is 9

            values are 29 65
            Array
            (
                [0] => 29
                [1] => 65
            )
            Array
            (
                [0] => Array
                    (
                        [0] => 1
                        [1] => 0
                        [2] => 29
                        [3] => 64
                    )

            )

我无法让它推送第二个数组 - 我一定是遗漏了什么？

我已经尝试了所有我能想到的方法，但无法弄清楚为什么第二个数组（已创建）没有被推送到多维数组中。

任何帮助都会很棒

Answer 1

不确定代码的总体用途是“确切”，但我确实理解您试图获得的结果，并且我也理解它为什么不起作用。我已经评论了我的代码，所以你应该能够看到它在做什么。我首先在代码中创建了一个数组，但我认为它适用于你得到的任何数组，即使你没有展示它是如何生成的。

$selectorDetailsArray = Array(65,1,0,65,29,64,66,1,69,66,29,65);

$initialChild = $selectorDetailsArray[0];
$selectorDetailsMultiDimArray = array();
$multiDimHoldArray = array();
$loopstrings = array(" :: 1st loop :: "," :: 2nd loop :: "," :: 3rd loop :: "," :: 4th loop :: ");
$loop = 0;
$dim = 0;

for($r=0;$r<count($selectorDetailsArray);$r+=3){
    echo "<br>START".$loopstrings[$loop]."<br>";
    echo "Test vars are ".$selectorDetailsArray[$r]." : ".$initialChild."<br> ";
    if(intval($selectorDetailsArray[$r]) == intval($initialChild)){
        echo"<br> r is ".$r."<br>";
        array_push($multiDimHoldArray,$selectorDetailsArray[$r+1],$selectorDetailsArray[$r+2]);
        echo"<br> values are ".$selectorDetailsArray[$r+1]."  ".$selectorDetailsArray[$r+2]."<br>";
    }else{
        array_push($selectorDetailsMultiDimArray,$multiDimHoldArray);
        $multiDimHoldArray = array();
        // This needs to be here because the "if" is not run during this loop...
        array_push($multiDimHoldArray,$selectorDetailsArray[$r+1],$selectorDetailsArray[$r+2]);
        echo "initial child is ".$initialChild."<br>";
        $initialChild = $selectorDetailsArray[$r];
        echo "initial child after change is ".$initialChild." -- ($ r = $r)<br>";
    }
    echo "<br>END".$loopstrings[$loop++]."<br>";
}
// We push one last time since it successfully pushed twice more in the "if" but never ran the "else" a final time...
array_push($selectorDetailsMultiDimArray,$multiDimHoldArray);
echo "<br>";
echo "<br>BEGIN OUTPUT<br>";
print "<pre>";
print_r($selectorDetailsArray);
print_r($multiDimHoldArray);
print_r($selectorDetailsMultiDimArray);
print "</pre>";

这是我的代码生成的输出。我添加了几行使其可读，并在最后输出所有数组：

    START :: 1st loop ::
    Test vars are 65 : 65

    r is 0

    values are 1 0

    END :: 1st loop ::

    START :: 2nd loop ::
    Test vars are 65 : 65

    r is 3

    values are 29 64

    END :: 2nd loop ::

    START :: 3rd loop ::
    Test vars are 66 : 65
    initial child is 65
    initial child after change is 66 -- ($ r = 6)

    END :: 3rd loop ::

    START :: 4th loop ::
    Test vars are 66 : 66

    r is 9

    values are 29 65

    END :: 4th loop ::


    BEGIN OUTPUT

    Array
    (
        [0] => 65
        [1] => 1
        [2] => 0
        [3] => 65
        [4] => 29
        [5] => 64
        [6] => 66
        [7] => 1
        [8] => 69
        [9] => 66
        [10] => 29
        [11] => 65
    )
    Array
    (
        [0] => 1
        [1] => 69
        [2] => 29
        [3] => 65
    )
    Array
    (
        [0] => Array
            (
                [0] => 1
                [1] => 0
                [2] => 29
                [3] => 64
            )

        [1] => Array
            (
                [0] => 1
                [1] => 69
                [2] => 29
                [3] => 65
            )

    )