数组按值降序排序，在php中按升序排序索引

Question

I have an array pr($site_name_with_value) looks like this. This is the result of two combine_array .

Array(
    [Ashuganj PDB] => 720
    [Bagherhat PGCB] => 720
    [Banani_CO] => 720
    [Barapukuria PGCB] => 784
    [Barishal PGCB] => 780
    [Benapole_CO] => 752
    [Bogura RO] => 776
    [Bogura_CO(IS)] => 784 
)

I have tried this to expected output.

$site_name_with_value_order = arsort($site_name_with_value); 
foreach ($site_name_with_value_order as $key => $val) {
    echo "$key = $val\n";
}

It returns an error message Invalid argument supplied for foreach()

First I want to sort them by value descending order . Second if the value is the same then order index by ascending .

I want to get output looks like this. But I don't know how to gain my expected output.

Array(
    [Bogura_CO(IS)] => 784
    [Barapukuria PGCB] => 784
    [Barishal PGCB] => 780
    [Bogura RO] => 776
    [Benapole_CO] => 752 
    [Ashuganj PDB] => 720
    [Bagherhat PGCB] => 720
    [Banani_CO] => 720   
)

Answer 1

First of all, you've created an array with duplicate key which is not a valid way. So when you try to sort the array by value with arsort() - Sort an array in reverse order and maintain index association , but it will return different results for different php version. See the DEMO

$array = array(
   
    'Ash' => 776,
    'Bag' => 720,
    'Ban' => 720,
    'Bar' => 776,
    'Bar' => 780,
    'Ben' => 752,
    'Bog' => 720,
    'Bog' => 780,
    'Bue' => 776,  
);
arsort($array);
print_r($array);

Answer 2

There's no need to assign the

arsort($site_name_with_value); 

in another variable because it will only return to 1. So just loop the

$site_name_with_value 

instead.