When array_combine is used, if the key name is the same, only one is displayed. how can all be displayed?

When array_combine is used, you can only display one key with the same name. $ Sum = Array & nbsp; (& nbsp; [0] & nbsp ;=& gt; & nbsp; 0 & nbsp; [1] & nbsp ;=& gt; & nbsp; 0 & nbsp; [2] & nbsp; = & gt; & nbsp; 0 & nbsp; [3] When array_combine is used, if you want to display only one key with the same name, how can you display all the key names.
$ Sum = Array ([0] => 0 [1] => 0 [2] => 0 [3] => 0 [4] => 50 [5] => 15 [6] => 0 [7] => 0 [8] => 15 [9] => 15)
$ City = Array ([0] => Nanchang [1] => Ganzhou [2] => Ji 'an [3] => Jiujiang [4] => Nanchang [5] => jiujiang [6] => Pingxiang [7] => outside the province [8] => Nanchang [9] => Jiujiang)

$ Arra1 = array_combine ($ sum, $ city );
The result is as follows.
Array ([0] => outside the province [50] => Nanchang [15] => Jiujiang)
The system displays only one key with the same name...
Is there any way to display it all ..
Is to display the key name and key value completely.

Display as Array ([0] => Nanchang [0] => Ganzhou [0] => Ji 'an [0] => Jiujiang [50] => Nanchang [15] => Jiujiang [0] => Pingxiang [0] => outside the province [15] => Nanchang [15] => Jiujiang)

Is to change the key value of the first array to the key name of the second array,

Share :? 0? [1]? =>? 0? [2]? =>? 0? [3]? =>? 0? [4]? =>? 50? [5]? =>? 15? [6]? =>? 0? [7]? =>? 0 ?... 'Data-pics = ''>
------ Solution --------------------
Can the key names be repeated?
------ Solution --------------------
$ Arr = array_combine ($ city, $ sum );
Echo 'Array (', PHP_EOL;
Foreach ($ arr as $ k => $ v) echo "\ t [$ v] => $ k", PHP_EOL;
Echo ')', PHP_EOL;

Show complete, pure entertainment ......
------ Solution --------------------
Your array does not exist. the same key value in the same dimension cannot contain more than two.