[Solved] PHP array_merge combining arrays with same values

Question

Arrays can contain repeated values but, for obvious reasons, cannot contain repeated keys. array_combine will overwrite the value corresponding to each duplicate key it finds.

Assuming that all your serial numbers are unique, a simple solution would be to swap round your array_combine to make the serial number the key:

foreach (array_combine($serial, $make) as $number => $model):

If you have a one-to-many relationship between “make” and “serial number”, you might want to consider changing your data structure so that each make corresponds to an array of serial numbers.

Accepted Answer

Arrays can contain repeated values but, for obvious reasons, cannot contain repeated keys. array_combine will overwrite the value corresponding to each duplicate key it finds.

Assuming that all your serial numbers are unique, a simple solution would be to swap round your array_combine to make the serial number the key:

foreach (array_combine($serial, $make) as $number => $model):

If you have a one-to-many relationship between “make” and “serial number”, you might want to consider changing your data structure so that each make corresponds to an array of serial numbers.