我想知道是否有可能编辑foreach循环中正在处理的当前对象
我正在处理对象$questions的数组，我想遍历并在我的数据库中查找与该问题对象相关联的答案.因此，对于每个问题，获取Answer对象并更新当前的$question、inside和MYforeach循环，这样我就可以在其他地方输出/处理.
foreach($questions as $question){
$question['answers'] = $answers_model->get_answers_by_question_id($question['question_id']);
}
有两种方法可以做到这一点
f或each($questions as $key => $question){
$questions[$key]['answers'] = $answers_model->get_answers_by_question_id($question['question_id']);
}
这样您就可以保存密钥，这样就可以在Main $questions变量中再次更新它
或
f或each($questions as &$question){
Adding the & will keep the $questions updated. But I would say the first one is recommended even though this is sh或ter (see comment by Paystey)
Per the PHP f或each documentation:
In 或der to be able to directly modify array elements within the loop precede $value with &. In that case the value will be assigned by reference.