add the values of two different associative arrays in php . display unique key-values too in the result array -

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• how sum values of array of same key? 13 answers

i need merge 2 associative arrays may or may not contain same key,if key same values need added , stored in resultant array

 $array1 = array(       'a' => 5,       'b' => 10,       'c' => 6,       'k' = > 10     );  $array2 = array(   'a' => 100,   'c' => 200,   'd' => 30,   'k' => 10 ); 

how add above 2 associative arrays , receive following output/associative array -

 $array2 = array(       'a' => 105,       'b' => 10,       'c' => 206,       'd' => 30,       'k' => 20     ); 

try

 $array1 = array(       'a' => 5,       'b' => 10,       'c' => 6,       'k' => 10     );  $array2 = array(   'a' => 100,   'c' => 200,   'd' => 30,   'k' => 10 );  $sums = array(); foreach (array_keys($array1 + $array2) $key) {     $sums[$key] = (isset($array1[$key]) ? $array1[$key] : 0) + (isset($array2[$key]) ? $array2[$key] : 0); }  print_r($sums);