Get property of Objects in an Array as String

no there is no build in function to get this done, but you can use the array_sum, array_map and the PHP implode Functions to get the work done.

function magicalArrayFunction($array) { return implode(',', array_map(function($v){ return $v['name']; }, $array)); } $usersString = magicalArrayFunction($admins); echo $usersString; function magicalSumArrayFunction($array) { return array_sum(array_map(function($v){ return $v['score']; }, $array)); } $arraySum = magicalSumArrayFunction($admins); echo $arraySum; 

just edit the return $v['name']; line to your object specific return value. like return $v->name;

//edit after comment

one liner solution

$array = ... $userString = implode(',', array_map(function($v){return $v['name'];}, $array)); $arraySum = array_sum(array_map(function($v){return $v['score'];}, $array)); 

You want to loop through your users. Foreach is your friend.

$user1 = json_decode( '{"id":1,"name":"u1","score":10}'); $user2 = json_decode( '{"id":2,"name":"u2","score":20}'); $admins = array($user1, $user2); $names = array(); $score = 0; foreach( $admins as $user) { $names[] = $user->name; $score += $user->score; } echo implode( ",", $names) . "\n"; echo $score; 

Here is your solution, as you need.. Though, validation for integer value in Sum function is remained to implement.. you can add it manually..

$user1 = '{"id":1,"name":"u1","score":10}'; $user2 = '{"id":2,"name":"u2","score":20}'; $admins = array($user1, $user2); echo magicalArrayFunction($admins, 'name', ', '); //SHOULD OUTPUT: "u1, u2" echo "<br>"; echo magicalSumArrayFunction($admins, 'score'); //SHOULD OUTPUT: 30 function magicalArrayFunction($array, $column, $sep = ', ') { foreach($array as $jsons){ $new_Arr[] = json_decode($jsons, true); } return implode($sep,array_column_custom($new_Arr, $column)); } function magicalSumArrayFunction($array, $column){ foreach($array as $jsons){ $new_Arr[] = json_decode($jsons, true); } return array_sum(array_column_custom($new_Arr, $column)); } function array_column_custom($array, $column){ foreach($array as $keys=>$inner_array){ foreach($inner_array as $inner_keys=> $values){ if($inner_keys == $column){ $newArr[] = $values; } } } return $newArr; } 

Edit: One Liner Solution

$user1 = '{"id":1,"name":"u1","score":10}'; $user2 = '{"id":2,"name":"u2","score":20}'; $admins = array($user1, $user2); // Fixed column name used here i.e. 'name','score'.. $userNames = implode(',', array_map(function($u){$u=json_decode($u, true); return $u['name'];}, $admins)); $totalScore = array_sum(array_map(function($u){ $u=json_decode($u, true); return $u['score'];}, $admins)); // If you need to call function.. echo magicalArrayFunction($admins, 'name', ', '); echo magicalSumArrayFunction($admins, 'score'); function magicalArrayFunction($array, $column, $sep = ', ') { return implode($sep, array_map(function($u,$c){ $u=json_decode($u, true); return $u[$c];}, $array, str_split(str_repeat($column, count($array)),strlen($column)) )); } function magicalSumArrayFunction($array, $column){ return array_sum(array_map(function($u,$c){ $u=json_decode($u, true); return $u[$c];}, $array,str_split(str_repeat($column, count($array)),strlen($column)))); }