How to implode a array object

Question

Here my code:

 public function getTime(){
       $store = $this->getStoreId();
       $mapping_time = $this->scopeConfig->getValue(self::XPATH_HOURMAX, ScopeInterface::SCOPE_STORE, $store);
       $postTime = unserialize($mapping_time);
       $time_array =array();
       foreach ($postTime as $key => $value) {
       $time_array[trim($value['field1'])] = 
     [
        trim($value['field1']),
        trim($value['field2'])
    ];
     }
       return $time_array;
}

Actual result :

output:

my expection is:

   value                  option
9:30 AM - 2:30 AM : "9:30 AM - 2:30 AM "
6:30 AM - 9:30 AM : "6:30 AM - 9:30 AM "
3:30 AM - 9:30 AM : "3:30 AM - 9:30 AM "

Answer 1

If I understand the question correctly it sounds like within your foreach $value is an array with two values (keys field1 and field2), and you would like both the value and label of the dropdown options to be a string with both values concatenated by a hyphen.

If this is correct you could do this in a couple of ways. Using simple concatenation:

$valueString = $value['field1'] . ' - ' . $value['field2'];
$time_array[trim($valueString)] = $valueString;

Or you could use php functions array_values and implode:

$valueString = implode(" - ", array_values($value));
$time_array[trim($valueString)] = $valueString;