<?php function transformQuestionnaire($arr) { $new_arr = array(); foreach ($arr as $array){ if (!in_array($array[0], array_keys($new_arr))){ //not a double $new_arr[$array[0]] = $array[1]; } else { //Append it to the existing value $new_arr[$array[0]] .= '|' . $array[1]; } } return $new_arr; } $input = array ( 0 => stdClass::__set_state(array( 'nr' => '2', 'code' => 'QL_ckbxtest', 'question' => 'Checkboxtest', 'answer' => 'Neen', 'lang' => 'nl', )), 1 => stdClass::__set_state(array( 'nr' => '2', 'code' => 'QL_ckbxtest', 'question' => 'Checkboxtest', 'answer' => 'Ja', 'lang' => 'nl', )), ); print(var_dump(transformQuestionnaire($input))); ?>
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