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run code in 150+ php & hhvm versions
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<?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))); ?>
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined method stdClass::__set_state() in /in/Fg1DJ:14 Stack trace: #0 {main} thrown in /in/Fg1DJ on line 14
Process exited with code 255.
Output for 5.0.0 - 5.6.28
Fatal error: Call to undefined method stdClass::__set_state() in /in/Fg1DJ on line 14
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined static function: stdclass::__set_state() in /in/Fg1DJ on line 14
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: __set_state() in /in/Fg1DJ on line 14
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: __set_state() in /in/Fg1DJ on line 14