how to ommit array from multidimensional array based on their values

I have an input array:

Array(
Array(
[vehicle] => BUS NO.1
[trip_name] => Trip00011
[running_km] => 5000
)
Array(
[vehicle] => BUS NO.2
[trip_name] => Trip00021
[running_km] => 2400
)
Array(
[vehicle] => BUS NO.1
[trip_name] => Trip00011
[running_km] => 0
)
Array(
[vehicle] => BUS NO.2
[trip_name] => Trip00011
[running_km] => 0
)
Array(
[vehicle] => BUS NO.2
[trip_name] => Trip00021
[running_km] => 0
)
)


I need to change this array into:

Array(
Array(
[vehicle] => BUS NO.1
[trip_name] => Trip00011
[running_km] => 5000
)
Array(
[vehicle] => BUS NO.2
[trip_name] => Trip00021
[running_km] => 2400
)
Array(
[vehicle] => BUS NO.2
[trip_name] => Trip00011
[running_km] => 0
)
)


Please look in to two arrays. I need to omit running_km => 0 array based on the value present in running_km for same vehicle and same trip_name. Could you please help me to do this.

running_km => 0

running_km

vehicle

trip_name

1 Answer
1

If you loop the array you can build a compound array key. (Example: 'BUS NO.2 Trip00021').

And if the the running km is more then overwrite the item in the new array.

After the loop I do a array_values to remove the associative array keys to indexed array keys.

foreach($arr as $item)
$key = $item['vehicle'] . $item['trip_name'];
if(isset($new[$key]))
if($item['running_km'] > $new[$key]['running_km']) $new[$key] = $item;
else
$new[$key] = $item;



$new = array_values($new);

var_dump($new);


Output:

array(3)
[0]=>
array(3)
["vehicle"]=>
string(8) "BUS NO.1"
["trip_name"]=>
string(9) "Trip00011"
["running_km"]=>
string(4) "5000"

[1]=>
array(3)
["vehicle"]=>
string(8) "BUS NO.2"
["trip_name"]=>
string(9) "Trip00021"
["running_km"]=>
string(4) "2400"

[2]=>
array(3)
["vehicle"]=>
string(8) "BUS NO.2"
["trip_name"]=>
string(9) "Trip00011"
["running_km"]=>
string(1) "0"




https://3v4l.org/4qX7q

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