如何使用php对此数组进行排序以获取特定排名

Question

这是我到目前为止的代码，尝试获取当前最高值，然后将该值与当前迭代的值进行比较。如果值匹配，则我将项目推送到新数组并从当前数组中取消设置。夹在将项目从一个阵列移动到另一个阵列之间，同时取消设置旧阵列。有什么帮助吗？

public function rank()
{
$students = array(
    array(
        'name' => 'Philemon',
        'score' => '90'
    ),
    array(
        'name' => 'Michael',
        'score' => '86'
    ),
    array(
        'name' => 'Lameck',
        'score' => '87'
    ),
    array(
        'name' => 'Tallam',
        'score' => '90'
    ),
    array(
        'name' => 'Joel',
        'score' => '82'
    ),
    array(
        'name' => 'Dennis',
        'score' => '85'
    ),
    array(
        'name' => 'Caleb',
        'score' => '83'
    ),
    array(
        'name' => 'Eric',
        'score' => '82'
    ),
    array(
        'name' => 'Harold',
        'score' => '88'
    ),
    array(
        'name' => 'Allan',
        'score' => '82'
    ),
    array(
        'name' => 'Joseph',
        'score' => '87'
    )
);

$students_unsorted = $students;
$students_sorted = [];
$rank = 1;

foreach ($students_unsorted as $student) {
    $current_score = $this->_maxValueInArray($students, 'score');
    if ($student['score'] == $current_score) {
        $student['rank'] == $rank;
        $rank++;
    }
}}

我想要实现像这样的数组

$students = [
    [
        'name' => 'Philemon',
        'score' => '90',
        'rank' => '1'
    ],
    [
        'name' => 'Michael',
        'score' => '86',
        'rank' => '4'
    ],
    [
        'name' => 'Lameck',
        'score' => '87',
        'rank' => '3'
    ],
    [
        'name' => 'Tallam',
        'score' => '90',
        'rank' => '1'
    ],
    [
        'name' => 'Joel',
        'score' => '82',
        'rank' => '7'
    ],
    [
        'name' => 'Dennis',
        'score' => '85',
        'rank' => '5'
    ],
    [
        'name' => 'Caleb',
        'score' => '83',
        'rank' => '6'
    ],
    [
        'name' => 'Eric',
        'score' => '82',
        'rank' => '7'
    ],
    [
        'name' => 'Harold',
        'score' => '88',
        'rank' => '2'
    ],
    [
        'name' => 'Allan',
        'score' => '82',
        'rank' => '7'
    ],
    [
        'name' => 'Joseph',
        'score' => '87',
        'rank' => '3'
    ]
];