Can I Modify Array Objects Directly Within a Foreach Loop?

Modifying Array Values with a Foreach Loop

Question:

Is it possible to edit the current object being handled within a foreach loop?

Context:

You have an array of objects ($questions) with associated answers in a database. You're attempting to fetch these answers for each question object during the loop iteration.

Solution:

You can modify the current object within a foreach loop by using one of the following methods:

1. Key Assignment:

   foreach($questions as $key => $question){
       $questions[$key]['answers'] = $answers_model->get_answers_by_question_id($question['question_id']);
   }

   This method preserves the array key, allowing you to update the value directly.

2. Reference Assignment:

   foreach($questions as &$question){
       $question['answers'] = $answers_model->get_answers_by_question_id($question['question_id']);
   }

   Adding an ampersand (&) before the variable name passes the reference to the object, enabling direct modifications within the loop.

Recommendation:

While the reference assignment method is concise, the key assignment method is generally recommended as it ensures predictable behavior in multidimensional arrays.

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