在PHP中查找数组中的元素

我不知道我是否以最佳方式管理此阵列

我拥有的阵列是：

$bass = $_POST['bass'];
$selected_scale = $_POST['scale'];
$major_scales = array 
    (
    array("C","D","E","F","G","A","B","C","D","E","F","G","A","B",),
    array("C#","D#","E#","F#","G#","A#","B#","C#","D#","E#","F#","G#","A#","B#",),
    array("Db","Eb","F","Gb","Ab","Bb","C","Db","Eb","F","Gb","Ab","Bb","C",),
    array("D","E","F#","G","A","B","C#","D","E","F#","G","A","B","C#"),
    array("D#","E#","F##","G#","A#","B#","C##","D#","E#","F##","G#","A#","B#","C##"),
    array("Eb","F","G","Ab","Bb","C","D","Eb","F","G","Ab","Bb","C","D"),
    array("E","F#","G#","A","B","C#","D#","E","F#","G#","A","B","C#","D#"),
    array("E#","F##","G##","A#","B#","C##","D##","E#","F##","G##","A#","B#","C##","D##"),
    array("Fb","Gb","Ab","Bbb","Cb","Db","Eb","Fb","Gb","Ab","Bbb","Cb","Db","Eb"),
    array("F","G","A","Bb","C","D","E","F","G","A","Bb","C","D","E"),
    array("F#","G#","A#","B","C#","D#","E#","F#","G#","A#","B","C#","D#","E#"),
    array("Gb","Ab","Bb","Cb","Db","Eb","F","Gb","Ab","Bb","Cb","Db","Eb","F"),
    array("G","A","B","C","D","E","F#","G","A","B","C","D","E","F#"),
    array("G#","A#","B#","C#","D#","E#","F##","G#","A#","B#","C#","D#","E#","F##"),
    array("Ab","Bb","C","Db","Eb","F","G","Ab","Bb","C","Db","Eb","F","G"),
    array("A","B","C#","D","E","F#","G#","A","B","C#","D","E","F#","G#"),
    array("A#","B#","C##","D#","E#","F##","G##","A#","B#","C##","D#","E#","F##","G##"),
    array("Bb","C","D","Eb","F","G","A","Bb","C","D","Eb","F","G","A"),
    array("B","C#","D#","E","F#","G#","A#","B","C#","D#","E","F#","G#","A#"),
    array("B#","C##","D##","E#","F##","G##","A##","B#","C##","D##","E#","F##","G##","A##"),
    array("Cb","Db","Eb","Fb","Gb","Ab","Bb","Cb","Db","Eb","Fb","Gb","Ab","Bb")
    );

$bass

是一个字符串，与数组中的字符串类似。

$selected_scale

只是一个数字

我要做的是在

$selected\u scale

位置的其中一个数组中找到

$bass

。基本上，

$bass=$major\u scale[$selected\u scale]

。因此，我想创建一个循环，以获取之后的元素

但我不知道在这种情况下该如何处理。我查阅了互联网上的所有信息，并尝试了各种解决方案，但都没有成功。我想知道我该怎么做。谢谢

尝试使用下一个循环：

// if value exists in mentioned index
if (in_array($bass,$major_scales[$selected_scale])){
    // index of that value in that array
    $tmp_ind = array_search($bass,$major_scales[$selected_scale]);

    // length of the array
    $len = count($major_scales[$selected_scale]);

    // store values after this value
    $res = [];
    for ($i=$tmp_ind;$i<$len;$i++){
        $res[$i] = $major_scales[$selected_scale][$i];
    }
}
print_r($res);

---

定义“获取之后的元素”。你想要的结果是什么？如果你写

$bass=$major\u scale[$selected\u scale]

，那么

$bass

将是一个字符串数组（假设$selected\u scale是一个对应于$selected\u scale索引之一的数字）。因此，您可以循环遍历它以获得所有单个字符串值。

foreach($major_scales as $ar){
    if ($ar[$selected_scale] == $bass){ 

        // length of the array
        $len = count($ar);

        // store values after this value
        $res = [];
        for ($i=$selected_scale;$i<$len;$i++){
            $res[$i] = $ar[$i];
        }
    }
} 
print_r($res);