在php中按级别4对关联数组进行排序

$associativeArray = array(
    'b' => 'apple',
    'a' => 'orange',
    'd' => 'banana',
    'c' => 'grape'
);

// 按键名升序排序
ksort($associativeArray);

// 输出排序后的数组
foreach ($associativeArray as $key => $value) {
    echo $key . ' => ' . $value . "\n";
}

a => orange
b => apple
c => grape
d => banana

$associativeArray = array(
    'b' => 'apple',
    'a' => 'orange',
    'd' => 'banana',
    'c' => 'grape'
);

// 按键名降序排序
krsort($associativeArray);

// 输出排序后的数组
foreach ($associativeArray as $key => $value) {
    echo $key . ' => ' . $value . "\n";
}

d => banana
c => grape
b => apple
a => orange